diff --git a/plugins/channelrx/demodam/amdemodgui.ui b/plugins/channelrx/demodam/amdemodgui.ui
index ba656f815..12ab3108d 100644
--- a/plugins/channelrx/demodam/amdemodgui.ui
+++ b/plugins/channelrx/demodam/amdemodgui.ui
@@ -24,8 +24,7 @@
   </property>
   <property name="font">
    <font>
-    <family>Sans Serif</family>
-    <pointsize>9</pointsize>
+    <family>Liberation Sans</family>
    </font>
   </property>
   <property name="focusPolicy">
@@ -98,7 +97,7 @@
           </property>
           <property name="font">
            <font>
-            <family>DejaVu Sans Mono</family>
+            <family>Liberation Mono</family>
             <pointsize>12</pointsize>
            </font>
           </property>
@@ -204,7 +203,7 @@
         </property>
         <property name="font">
          <font>
-          <family>Monospace</family>
+          <family>Liberation Mono</family>
           <pointsize>8</pointsize>
          </font>
         </property>
diff --git a/plugins/samplesource/filesource/filesourcegui.ui b/plugins/samplesource/filesource/filesourcegui.ui
index 20ec4bc82..33da4847d 100644
--- a/plugins/samplesource/filesource/filesourcegui.ui
+++ b/plugins/samplesource/filesource/filesourcegui.ui
@@ -24,8 +24,10 @@
   </property>
   <property name="font">
    <font>
-    <family>Sans Serif</family>
-    <pointsize>9</pointsize>
+    <family>Liberation Sans</family>
+    <weight>50</weight>
+    <italic>false</italic>
+    <bold>false</bold>
    </font>
   </property>
   <property name="windowTitle">
@@ -35,16 +37,7 @@
    <property name="spacing">
     <number>3</number>
    </property>
-   <property name="leftMargin">
-    <number>2</number>
-   </property>
-   <property name="topMargin">
-    <number>2</number>
-   </property>
-   <property name="rightMargin">
-    <number>2</number>
-   </property>
-   <property name="bottomMargin">
+   <property name="margin">
     <number>2</number>
    </property>
    <item>
@@ -130,7 +123,7 @@
        </property>
        <property name="font">
         <font>
-         <family>DejaVu Sans Mono</family>
+         <family>Liberation Mono</family>
          <pointsize>20</pointsize>
         </font>
        </property>
diff --git a/plugins/samplesource/testsource/testsourcegui.ui b/plugins/samplesource/testsource/testsourcegui.ui
index 546f3a175..d4052fd52 100644
--- a/plugins/samplesource/testsource/testsourcegui.ui
+++ b/plugins/samplesource/testsource/testsourcegui.ui
@@ -24,8 +24,10 @@
   </property>
   <property name="font">
    <font>
-    <family>Sans Serif</family>
-    <pointsize>9</pointsize>
+    <family>Liberation Sans</family>
+    <weight>50</weight>
+    <italic>false</italic>
+    <bold>false</bold>
    </font>
   </property>
   <property name="windowTitle">
@@ -35,16 +37,7 @@
    <property name="spacing">
     <number>3</number>
    </property>
-   <property name="leftMargin">
-    <number>2</number>
-   </property>
-   <property name="topMargin">
-    <number>2</number>
-   </property>
-   <property name="rightMargin">
-    <number>2</number>
-   </property>
-   <property name="bottomMargin">
+   <property name="margin">
     <number>2</number>
    </property>
    <item>
@@ -141,7 +134,7 @@
        </property>
        <property name="font">
         <font>
-         <family>DejaVu Sans Mono</family>
+         <family>Liberation Mono</family>
          <pointsize>20</pointsize>
         </font>
        </property>
@@ -412,7 +405,7 @@
        </property>
        <property name="font">
         <font>
-         <family>DejaVu Sans Mono</family>
+         <family>Liberation Mono</family>
          <pointsize>12</pointsize>
         </font>
        </property>
@@ -553,9 +546,8 @@
        </property>
        <property name="font">
         <font>
-         <family>DejaVu Sans Mono</family>
+         <family>Liberation Mono</family>
          <pointsize>12</pointsize>
-         <italic>false</italic>
         </font>
        </property>
        <property name="cursor">
diff --git a/sdrgui/mainwindow.ui b/sdrgui/mainwindow.ui
index 48b117453..d3f9938df 100644
--- a/sdrgui/mainwindow.ui
+++ b/sdrgui/mainwindow.ui
@@ -10,6 +10,11 @@
     <height>721</height>
    </rect>
   </property>
+  <property name="font">
+   <font>
+    <family>Liberation Sans</family>
+   </font>
+  </property>
   <property name="windowTitle">
    <string>SDRangel</string>
   </property>