diff --git a/cui/uiconfig/ui/aboutdialog.ui b/cui/uiconfig/ui/aboutdialog.ui
index d0c2f57f0378..f44ef92913c1 100644
--- a/cui/uiconfig/ui/aboutdialog.ui
+++ b/cui/uiconfig/ui/aboutdialog.ui
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Generated with glade 3.22.2 -->
 <interface domain="cui">
-  <requires lib="gtk+" version="3.20"/>
+  <requires lib="gtk+" version="3.18"/>
   <object class="GtkImage" id="imCopy">
     <property name="visible">True</property>
     <property name="can_focus">False</property>
diff --git a/cui/uiconfig/ui/additionsdialog.ui b/cui/uiconfig/ui/additionsdialog.ui
index cf606dec438f..523bcc276ede 100644
--- a/cui/uiconfig/ui/additionsdialog.ui
+++ b/cui/uiconfig/ui/additionsdialog.ui
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Generated with glade 3.22.1 -->
 <interface domain="cui">
-  <requires lib="gtk+" version="3.20"/>
+  <requires lib="gtk+" version="3.18"/>
   <object class="GtkDialog" id="AdditionsDialog">
     <property name="width_request">400</property>
     <property name="height_request">500</property>
diff --git a/cui/uiconfig/ui/additionsfragment.ui b/cui/uiconfig/ui/additionsfragment.ui
index 9b475e2fada4..2b4c23dff55b 100644
--- a/cui/uiconfig/ui/additionsfragment.ui
+++ b/cui/uiconfig/ui/additionsfragment.ui
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Generated with glade 3.22.1 -->
 <interface domain="cui">
-  <requires lib="gtk+" version="3.20"/>
+  <requires lib="gtk+" version="3.18"/>
   <object class="GtkGrid" id="additionsEntry">
     <property name="visible">True</property>
     <property name="can_focus">False</property>
diff --git a/sd/uiconfig/simpress/ui/clientboxfragment.ui b/sd/uiconfig/simpress/ui/clientboxfragment.ui
index cb2dcfd413f6..9c800383a048 100644
--- a/sd/uiconfig/simpress/ui/clientboxfragment.ui
+++ b/sd/uiconfig/simpress/ui/clientboxfragment.ui
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Generated with glade 3.22.1 -->
 <interface domain="sd">
-  <requires lib="gtk+" version="3.20"/>
+  <requires lib="gtk+" version="3.18"/>
   <object class="GtkGrid" id="ClientboxFragment">
     <property name="visible">True</property>
     <property name="can_focus">False</property>
diff --git a/svx/uiconfig/ui/accessibilitycheckdialog.ui b/svx/uiconfig/ui/accessibilitycheckdialog.ui
index 891a4b9ed24e..4acb6162aeba 100644
--- a/svx/uiconfig/ui/accessibilitycheckdialog.ui
+++ b/svx/uiconfig/ui/accessibilitycheckdialog.ui
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Generated with glade 3.22.1 -->
 <interface domain="svx">
-  <requires lib="gtk+" version="3.20"/>
+  <requires lib="gtk+" version="3.18"/>
   <object class="GtkDialog" id="AccessibilityCheckDialog">
     <property name="width_request">640</property>
     <property name="height_request">480</property>
diff --git a/svx/uiconfig/ui/accessibilitycheckentry.ui b/svx/uiconfig/ui/accessibilitycheckentry.ui
index 308cd8a08f7e..6ad955592fc8 100644
--- a/svx/uiconfig/ui/accessibilitycheckentry.ui
+++ b/svx/uiconfig/ui/accessibilitycheckentry.ui
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Generated with glade 3.22.1 -->
 <interface domain="svx">
-  <requires lib="gtk+" version="3.20"/>
+  <requires lib="gtk+" version="3.18"/>
   <object class="GtkBox" id="accessibilityCheckEntryBox">
     <property name="visible">True</property>
     <property name="can_focus">False</property>
diff --git a/vcl/uiconfig/ui/wizard.ui b/vcl/uiconfig/ui/wizard.ui
index e1f68da9e66a..76f92607f1ce 100644
--- a/vcl/uiconfig/ui/wizard.ui
+++ b/vcl/uiconfig/ui/wizard.ui
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Generated with glade 3.22.1 -->
 <interface domain="vcl">
-  <requires lib="gtk+" version="3.20"/>
+  <requires lib="gtk+" version="3.18"/>
   <object class="GtkAssistant" id="Wizard">
     <property name="can_focus">True</property>
     <property name="border_width">6</property>