diff --git a/classes/incident.php b/classes/incident.php
index 277be45..52fad06 100644
--- a/classes/incident.php
+++ b/classes/incident.php
@@ -104,14 +104,14 @@ class Incident
         $end_time = '';
       }
       
-      $stmt = $mysqli->prepare("INSERT INTO status VALUES ('',?, ?, ?, ?, ?, ?)");
+      $stmt = $mysqli->prepare("INSERT INTO status VALUES (NULL,?, ?, ?, ?, ?, ?)");
       $stmt->bind_param("issiii", $type, $title, $text, $time ,$end_time ,$user_id);
       $stmt->execute();
       $query = $stmt->get_result();
       $status_id = $mysqli->insert_id;
 
       foreach ($services as $service) {
-        $stmt = $mysqli->prepare("INSERT INTO services_status VALUES ('',?, ?)"); 
+        $stmt = $mysqli->prepare("INSERT INTO services_status VALUES (NULL,?, ?)"); 
         $stmt->bind_param("ii", $service, $status_id);
         $stmt->execute();
         $query = $stmt->get_result();
diff --git a/classes/service.php b/classes/service.php
index b0668a5..50adc69 100644
--- a/classes/service.php
+++ b/classes/service.php
@@ -46,7 +46,7 @@ class Service
     {
       global $mysqli;
       $name = $_POST['service'];
-      $stmt = $mysqli->prepare("INSERT INTO services VALUES('',?)");
+      $stmt = $mysqli->prepare("INSERT INTO services VALUES(NULL,?)");
       $stmt->bind_param("s", $name);
       $stmt->execute();
       $query = $stmt->get_result();
diff --git a/classes/user.php b/classes/user.php
index c8b94a5..9a9cae0 100644
--- a/classes/user.php
+++ b/classes/user.php
@@ -114,7 +114,7 @@ class User
         $permission = $_POST['permission'];
         
 
-        $stmt = $mysqli->prepare("INSERT INTO users values ('', ?, ?, ?, ?, ?, ?, ?, 1)");
+        $stmt = $mysqli->prepare("INSERT INTO users values (NULL, ?, ?, ?, ?, ?, ?, ?, 1)");
         $stmt->bind_param("ssssssi", $email, $username, $name, $surname, $hash, $salt, $permission);
         $stmt->execute();
         $query = $stmt->get_result();