diff --git a/admin/dashboard.php b/admin/dashboard.php
index 1660a12..6da0abb 100644
--- a/admin/dashboard.php
+++ b/admin/dashboard.php
@@ -69,10 +69,10 @@ Template::render_header(_("Dashboard"), true);
               <i class="glyphicon glyphicon-info-sign"></i>
             </div>
             <div class="panel-heading clearfix">
-              <input type="text" name="title" id="title" placeholder="<?php echo _("Title");?>" value="<?php echo (isset($_POST['title'])?htmlspecialchars($_POST['title']):''); ?>" require_onced> <span id="time"><input id="time_input" type="text" pattern="(\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d:[0-5]\d\.\d+([+-][0-2]\d:[0-5]\d|Z))|(\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d:[0-5]\d([+-][0-2]\d:[0-5]\d|Z))|(\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d([+-][0-2]\d:[0-5]\d|Z))" name="time" value="<?php echo (isset($_POST['time'])?htmlspecialchars($_POST['time']):''); ?>" class="pull-right" title="Use ISO 8601 format (e.g. 2017-11-23T19:50:51+00:00)" placeholder="<?php echo _("Time");?>"></span>
+              <input type="text" name="title" id="title" placeholder="<?php echo _("Title");?>" value="<?php echo (isset($_POST['title'])?htmlspecialchars($_POST['title']):''); ?>" required> <span id="time"><input id="time_input" type="text" pattern="(\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d:[0-5]\d\.\d+([+-][0-2]\d:[0-5]\d|Z))|(\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d:[0-5]\d([+-][0-2]\d:[0-5]\d|Z))|(\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d([+-][0-2]\d:[0-5]\d|Z))" name="time" value="<?php echo (isset($_POST['time'])?htmlspecialchars($_POST['time']):''); ?>" class="pull-right" title="Use ISO 8601 format (e.g. 2017-11-23T19:50:51+00:00)" placeholder="<?php echo _("Time");?>"></span>
             </div>
             <div class="panel-body">
-              <textarea name="text" placeholder="<?php echo _("Here goes your text...");?>" require_onced><?php echo (isset($_POST['text'])?htmlspecialchars($_POST['text']):''); ?></textarea>
+              <textarea name="text" placeholder="<?php echo _("Here goes your text...");?>" required><?php echo (isset($_POST['text'])?htmlspecialchars($_POST['text']):''); ?></textarea>
             </div>
             <div class="panel-footer clearfix">
               <small><?php echo _("Posted by");?>: <?php echo $user->get_username();?> <span class="pull-right" id="end_time_wrapper"><?php echo _("Ending");?>:&nbsp;<input id="end_time" title="Use ISO 8601 format (e.g. 2017-11-23T19:50:51+00:00)" type="text" pattern="(\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d:[0-5]\d\.\d+([+-][0-2]\d:[0-5]\d|Z))|(\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d:[0-5]\d([+-][0-2]\d:[0-5]\d|Z))|(\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d([+-][0-2]\d:[0-5]\d|Z))" name="end_time" class="pull-right" placeholder="<?php echo _("End time");?>" value="<?php echo (isset($_POST['end_time'])?htmlspecialchars($_POST['end_time']):''); ?>"></span></small>
diff --git a/admin/login-form.php b/admin/login-form.php
index 783189d..f4ef6f9 100644
--- a/admin/login-form.php
+++ b/admin/login-form.php
@@ -13,11 +13,11 @@ Template::render_header(_("Login"));
     <form action="<?php echo WEB_URL;?>/admin/" method="post">
           <div class="form-group">
             <label for="email"><?php echo _("Email");?></label>
-            <input placeholder="<?php echo _("Email");?>" class="form-control" name="email" id="email" type="email" tabindex="1" value="<?php echo htmlspecialchars((isset($_POST['email'])?$_POST['email']:''),ENT_QUOTES);?>" require_onced>
+            <input placeholder="<?php echo _("Email");?>" class="form-control" name="email" id="email" type="email" tabindex="1" value="<?php echo htmlspecialchars((isset($_POST['email'])?$_POST['email']:''),ENT_QUOTES);?>" required>
           </div>
           <div class="form-group" style="margin-bottom: 8px">
             <label for="pass"><?php echo _("Password");?></label>
-            <input placeholder="<?php echo _("Password");?>" class="form-control" name="pass" id="pass" type="password" tabindex="2" require_onced>
+            <input placeholder="<?php echo _("Password");?>" class="form-control" name="pass" id="pass" type="password" tabindex="2" required>
             <div style="padding-top: 8px; position: relative;">
               <a href="<?php echo WEB_URL;?>/admin/?do=lost-password" class="pull-right noselect" tabindex="5"><?php echo _("Forgotten password?");?></a>
               <input name="remember" id="remember" type="checkbox" tabindex="3"> <label class="lbl-login noselect" style="color: black;" for="remember"><?php echo _("Remember me");?></label>
diff --git a/admin/lost-password.php b/admin/lost-password.php
index a2ead11..1af7580 100644
--- a/admin/lost-password.php
+++ b/admin/lost-password.php
@@ -45,7 +45,7 @@ Template::render_header(_("Lost password"));
       <?php if (!isset($_GET['id'])||!isset($_GET['token'])){?>
         <label for="email"><?php echo _("Email");?>:</label>
           <div class="input-group pull-right">
-            <input class="form-control" name="email" id="email" placeholder="<?php echo _("Email");?>" type="email" require_onced>
+            <input class="form-control" name="email" id="email" placeholder="<?php echo _("Email");?>" type="email" required>
             <span class="input-group-btn">
               <button type="submit" class="btn btn-success pull-right"><?php echo _("Submit request");?></button>
             </span>
diff --git a/admin/new-user.php b/admin/new-user.php
index 7dd074d..9e04c2b 100644
--- a/admin/new-user.php
+++ b/admin/new-user.php
@@ -16,15 +16,15 @@ Template::render_header(_("New user"), true); ?>
     <?php
     } ?>
 	<div class="form-group">
-		<div class="col-sm-6"><label for="name"><?php echo _("Name");?>: </label><input type="text" maxlength="50" name="name" value="<?php echo ((isset($_POST['name']))?htmlspecialchars($_POST['name'],ENT_QUOTES):'');?>" id="name" placeholder="<?php echo _("Name");?>" class="form-control" require_onced></div>
-		<div class="col-sm-6"><label for="surname"><?php echo _("Surname");?>: </label><input type="text" maxlength="50" name="surname" value="<?php echo ((isset($_POST['surname']))?htmlspecialchars($_POST['surname'],ENT_QUOTES):'');?>" id="surname" placeholder="<?php echo _("Surname");?>" class="form-control" require_onced></div>
+		<div class="col-sm-6"><label for="name"><?php echo _("Name");?>: </label><input type="text" maxlength="50" name="name" value="<?php echo ((isset($_POST['name']))?htmlspecialchars($_POST['name'],ENT_QUOTES):'');?>" id="name" placeholder="<?php echo _("Name");?>" class="form-control" required></div>
+		<div class="col-sm-6"><label for="surname"><?php echo _("Surname");?>: </label><input type="text" maxlength="50" name="surname" value="<?php echo ((isset($_POST['surname']))?htmlspecialchars($_POST['surname'],ENT_QUOTES):'');?>" id="surname" placeholder="<?php echo _("Surname");?>" class="form-control" required></div>
 	</div>
 	<div class="form-group">
-		<div class="col-sm-6"><label for="username"><?php echo _("Username");?>:</label><input type="text" maxlength="50" name="username" value="<?php echo ((isset($_POST['username']))?htmlspecialchars($_POST['username'],ENT_QUOTES):'');?>" id="username" placeholder="<?php echo _("Username");?>" class="form-control" require_onced></div>
-		<div class="col-sm-6"><label for="email"><?php echo _("Email");?>:</label><input type="email" maxlength="60" name="email" value="<?php echo ((isset($_POST['email']))?htmlspecialchars($_POST['email'],ENT_QUOTES):'');?>" id="email" placeholder="<?php echo _("Email");?>" class="form-control" require_onced></div>
+		<div class="col-sm-6"><label for="username"><?php echo _("Username");?>:</label><input type="text" maxlength="50" name="username" value="<?php echo ((isset($_POST['username']))?htmlspecialchars($_POST['username'],ENT_QUOTES):'');?>" id="username" placeholder="<?php echo _("Username");?>" class="form-control" required></div>
+		<div class="col-sm-6"><label for="email"><?php echo _("Email");?>:</label><input type="email" maxlength="60" name="email" value="<?php echo ((isset($_POST['email']))?htmlspecialchars($_POST['email'],ENT_QUOTES):'');?>" id="email" placeholder="<?php echo _("Email");?>" class="form-control" required></div>
 	</div>
 	<div class="form-group">
-		<div class="col-sm-6"><label for="password"><?php echo _("Password");?>:</label><input type="password" name="password" value="<?php echo ((isset($_POST['password']))?htmlspecialchars($_POST['password'],ENT_QUOTES):'');?>" id="password" placeholder="<?php echo _("Password");?>" class="form-control" require_onced></div>
+		<div class="col-sm-6"><label for="password"><?php echo _("Password");?>:</label><input type="password" name="password" value="<?php echo ((isset($_POST['password']))?htmlspecialchars($_POST['password'],ENT_QUOTES):'');?>" id="password" placeholder="<?php echo _("Password");?>" class="form-control" required></div>
 		<div class="col-sm-6">
 			<label for="permission"><?php echo _("Permission");?>: </label>
 			<select name="permission" id="permission" class="form-control">
diff --git a/admin/settings.php b/admin/settings.php
index 1063efc..767e5c5 100644
--- a/admin/settings.php
+++ b/admin/settings.php
@@ -24,7 +24,7 @@ if (isset($message)){
 <?php if ($user->get_rank() <= 1){?>
 <form action="?do=settings&amp;new=service" method="post">
 	<div class="input-group pull-right new-service">
-		<input class="form-control" name="service" placeholder="Name" type="text" value="<?php echo ((isset($_POST['service']))?htmlspecialchars($_POST['service']):''); ?>" maxlength="50" require_onced>
+		<input class="form-control" name="service" placeholder="Name" type="text" value="<?php echo ((isset($_POST['service']))?htmlspecialchars($_POST['service']):''); ?>" maxlength="50" required>
 		<span class="input-group-btn">
 			<button type="submit" class="btn btn-success pull-right"><?php echo _("Add service");?></button>
 		</span>
diff --git a/classes/incident.php b/classes/incident.php
index 1c1fe58..11d8157 100644
--- a/classes/incident.php
+++ b/classes/incident.php
@@ -66,7 +66,7 @@ class Incident
 
   /**
    * Processes submitted form and adds incident unless problem is encountered, 
-   * calling this is possible only for admin or higher rank. Also checks require_oncements
+   * calling this is possible only for admin or higher rank. Also checks requirements
    * for char limits.
    * @return void
    */
diff --git a/classes/service.php b/classes/service.php
index ff65a1c..87d28f9 100644
--- a/classes/service.php
+++ b/classes/service.php
@@ -51,7 +51,7 @@ class Service
 
   /**
    * Processes submitted form and adds service unless problem is encountered, 
-   * calling this is possible only for admin or higher rank. Also checks require_oncements
+   * calling this is possible only for admin or higher rank. Also checks requirements
    * for char limits.
    * @return void
    */
diff --git a/classes/user.php b/classes/user.php
index 8b72618..e95dc01 100644
--- a/classes/user.php
+++ b/classes/user.php
@@ -106,7 +106,7 @@ class User
   /**
    * Processes submitted form and adds user unless problem is encountered, 
    * calling this is possible only for Superadmin (other ranks cannot add users)
-   * or when the installation script is being run. Also checks require_oncements
+   * or when the installation script is being run. Also checks requirements
    * for username and email being unique and char limits.
    * @return void
    */
diff --git a/install.php b/install.php
index 8eafeb0..54b1518 100644
--- a/install.php
+++ b/install.php
@@ -142,13 +142,13 @@ if (!empty($message))
 		<summary><?php echo _("We need a name for your status page and a url, so we can mail users link for forgotten password etc.");?></summary>
 
 			<div class="form-group clearfix">
-				<div class="col-sm-6"><label for="servername"><?php echo _("Name");?>: </label><input type="text" name="servername" value="<?php echo ((isset($_POST['servername']))?htmlspecialchars($_POST['servername'], ENT_QUOTES):'');?>" id="servername" placeholder="<?php echo _("Name");?>" class="form-control" require_onced></div>
-				<div class="col-sm-6"><label for="url"><?php echo _("Url");?>: </label><input type="url" name="url" value="<?php echo ((isset($_POST['url']))?htmlspecialchars($_POST['url'], ENT_QUOTES):'');?>" id="url" placeholder="<?php echo _("Url");?>" class="form-control" require_onced></div>
+				<div class="col-sm-6"><label for="servername"><?php echo _("Name");?>: </label><input type="text" name="servername" value="<?php echo ((isset($_POST['servername']))?htmlspecialchars($_POST['servername'], ENT_QUOTES):'');?>" id="servername" placeholder="<?php echo _("Name");?>" class="form-control" required></div>
+				<div class="col-sm-6"><label for="url"><?php echo _("Url");?>: </label><input type="url" name="url" value="<?php echo ((isset($_POST['url']))?htmlspecialchars($_POST['url'], ENT_QUOTES):'');?>" id="url" placeholder="<?php echo _("Url");?>" class="form-control" required></div>
 			</div>
 			<summary><?php echo _("Also an email address for mailer would be nice :)");?></summary>
 			<div class="form-group clearfix">
-				<div class="col-sm-6"><label for="mailer"><?php echo _("Name");?>: </label><input type="text" name="mailer" value="<?php echo ((isset($_POST['mailer']))?htmlspecialchars($_POST['mailer'], ENT_QUOTES):'');?>" id="mailer" placeholder="<?php echo _("Name");?>" class="form-control" require_onced></div>
-				<div class="col-sm-6"><label for="mailer_email"><?php echo _("Email");?>: </label><input type="email" name="mailer_email" value="<?php echo ((isset($_POST['mailer_email']))?htmlspecialchars($_POST['mailer_email'], ENT_QUOTES):'');?>" id="mailer_email" placeholder="<?php echo _("Email");?>" class="form-control" require_onced></div>
+				<div class="col-sm-6"><label for="mailer"><?php echo _("Name");?>: </label><input type="text" name="mailer" value="<?php echo ((isset($_POST['mailer']))?htmlspecialchars($_POST['mailer'], ENT_QUOTES):'');?>" id="mailer" placeholder="<?php echo _("Name");?>" class="form-control" required></div>
+				<div class="col-sm-6"><label for="mailer_email"><?php echo _("Email");?>: </label><input type="email" name="mailer_email" value="<?php echo ((isset($_POST['mailer_email']))?htmlspecialchars($_POST['mailer_email'], ENT_QUOTES):'');?>" id="mailer_email" placeholder="<?php echo _("Email");?>" class="form-control" required></div>
 			</div>
 	</section>
 	<section class="install-section clearfix">
@@ -156,27 +156,27 @@ if (!empty($message))
 		<summary><?php echo _("We need database connection to be able to create tables. Please check that your account has the permission needed to do that.");?></summary>
 
 			<div class="form-group clearfix">
-				<div class="col-sm-6"><label for="server"><?php echo _("Server");?>: </label><input type="text" name="server" value="<?php echo ((isset($_POST['server']))?htmlspecialchars($_POST['server'], ENT_QUOTES):'');?>" id="server" placeholder="<?php echo _("Server");?>" class="form-control" require_onced></div>
-				<div class="col-sm-6"><label for="database"><?php echo _("Database");?>: </label><input type="text" name="database" value="<?php echo ((isset($_POST['database']))?htmlspecialchars($_POST['database'], ENT_QUOTES):'');?>" id="database" placeholder="<?php echo _("Database");?>" class="form-control" require_onced></div>
+				<div class="col-sm-6"><label for="server"><?php echo _("Server");?>: </label><input type="text" name="server" value="<?php echo ((isset($_POST['server']))?htmlspecialchars($_POST['server'], ENT_QUOTES):'');?>" id="server" placeholder="<?php echo _("Server");?>" class="form-control" required></div>
+				<div class="col-sm-6"><label for="database"><?php echo _("Database");?>: </label><input type="text" name="database" value="<?php echo ((isset($_POST['database']))?htmlspecialchars($_POST['database'], ENT_QUOTES):'');?>" id="database" placeholder="<?php echo _("Database");?>" class="form-control" required></div>
 			</div>
 			<div class="form-group clearfix">
-				<div class="col-sm-6"><label for="dbuser"><?php echo _("User");?>: </label><input type="text" name="dbuser" value="<?php echo ((isset($_POST['dbuser']))?htmlspecialchars($_POST['dbuser'], ENT_QUOTES):'');?>" id="dbuser" placeholder="<?php echo _("User");?>" class="form-control" require_onced></div>
-				<div class="col-sm-6"><label for="dbpassword"><?php echo _("Password");?>: </label><input type="password" name="dbpassword" value="<?php echo ((isset($_POST['dbpassword']))?htmlspecialchars($_POST['dbpassword'], ENT_QUOTES):'');?>" id="dbpassword" placeholder="<?php echo _("Password");?>" class="form-control" require_onced></div>
+				<div class="col-sm-6"><label for="dbuser"><?php echo _("User");?>: </label><input type="text" name="dbuser" value="<?php echo ((isset($_POST['dbuser']))?htmlspecialchars($_POST['dbuser'], ENT_QUOTES):'');?>" id="dbuser" placeholder="<?php echo _("User");?>" class="form-control" required></div>
+				<div class="col-sm-6"><label for="dbpassword"><?php echo _("Password");?>: </label><input type="password" name="dbpassword" value="<?php echo ((isset($_POST['dbpassword']))?htmlspecialchars($_POST['dbpassword'], ENT_QUOTES):'');?>" id="dbpassword" placeholder="<?php echo _("Password");?>" class="form-control" required></div>
 			</div>
 	</section>
 	<section class="install-section clearfix">
 		<h2><?php echo _("User");?></h2>
 		<summary><?php echo _("And finally, we need info to create a new user. You don't have to provide it, but then... No status page admin...");?></summary>
 <div class="form-group">
-		<div class="col-sm-6"><label for="name"><?php echo _("Name");?>: </label><input type="text" maxlength="50" name="name" value="<?php echo ((isset($_POST['name']))?htmlspecialchars($_POST['name'], ENT_QUOTES):'');?>" id="name" placeholder="<?php echo _("Name");?>" class="form-control" require_onced></div>
-		<div class="col-sm-6"><label for="surname"><?php echo _("Surname");?>: </label><input type="text" maxlength="50" name="surname" value="<?php echo ((isset($_POST['surname']))?htmlspecialchars($_POST['surname'], ENT_QUOTES):'');?>" id="surname" placeholder="<?php echo _("Surname");?>" class="form-control" require_onced></div>
+		<div class="col-sm-6"><label for="name"><?php echo _("Name");?>: </label><input type="text" maxlength="50" name="name" value="<?php echo ((isset($_POST['name']))?htmlspecialchars($_POST['name'], ENT_QUOTES):'');?>" id="name" placeholder="<?php echo _("Name");?>" class="form-control" required></div>
+		<div class="col-sm-6"><label for="surname"><?php echo _("Surname");?>: </label><input type="text" maxlength="50" name="surname" value="<?php echo ((isset($_POST['surname']))?htmlspecialchars($_POST['surname'], ENT_QUOTES):'');?>" id="surname" placeholder="<?php echo _("Surname");?>" class="form-control" required></div>
 	</div>
 	<div class="form-group">
-		<div class="col-sm-6"><label for="username"><?php echo _("Username");?>:</label><input type="text" maxlength="50" name="username" value="<?php echo ((isset($_POST['username']))?htmlspecialchars($_POST['username'], ENT_QUOTES):'');?>" id="username" placeholder="<?php echo _("Username");?>" class="form-control" require_onced></div>
-		<div class="col-sm-6"><label for="email"><?php echo _("Email");?>:</label><input type="email" maxlength="60" name="email" value="<?php echo ((isset($_POST['email']))?htmlspecialchars($_POST['email'], ENT_QUOTES):'');?>" id="email" placeholder="<?php echo _("Email");?>" class="form-control" require_onced><input type="hidden" name="permission" value="0"></div>
+		<div class="col-sm-6"><label for="username"><?php echo _("Username");?>:</label><input type="text" maxlength="50" name="username" value="<?php echo ((isset($_POST['username']))?htmlspecialchars($_POST['username'], ENT_QUOTES):'');?>" id="username" placeholder="<?php echo _("Username");?>" class="form-control" required></div>
+		<div class="col-sm-6"><label for="email"><?php echo _("Email");?>:</label><input type="email" maxlength="60" name="email" value="<?php echo ((isset($_POST['email']))?htmlspecialchars($_POST['email'], ENT_QUOTES):'');?>" id="email" placeholder="<?php echo _("Email");?>" class="form-control" required><input type="hidden" name="permission" value="0"></div>
 	</div>
 	<div class="form-group">
-		<div class="col-sm-6"><label for="password"><?php echo _("Password");?>:</label><input type="password" name="password" value="<?php echo ((isset($_POST['password']))?htmlspecialchars($_POST['password'], ENT_QUOTES):'');?>" id="password" placeholder="<?php echo _("Password");?>" class="form-control" require_onced></div>
+		<div class="col-sm-6"><label for="password"><?php echo _("Password");?>:</label><input type="password" name="password" value="<?php echo ((isset($_POST['password']))?htmlspecialchars($_POST['password'], ENT_QUOTES):'');?>" id="password" placeholder="<?php echo _("Password");?>" class="form-control" required></div>
 		<div class="col-sm-6">
 			<input type="hidden" value="0" name="permission">
 			<button type="submit" class="btn btn-success pull-right"><?php echo _("Run install!");?></button>