diff --git a/gtk/ui/gtkapplication-quartz.ui b/gtk/ui/gtkapplication-quartz.ui
index efa969e205..876e1c59fe 100644
--- a/gtk/ui/gtkapplication-quartz.ui
+++ b/gtk/ui/gtkapplication-quartz.ui
@@ -1,4 +1,5 @@
-<interface>
+<?xml version="1.0" encoding="UTF-8"?>
+<interface domain="gtk30">
   <menu id='app-menu'>
     <section>
       <item>
diff --git a/gtk/ui/gtkfilechooserdialog.ui b/gtk/ui/gtkfilechooserdialog.ui
index 2ba4f88fda..68056a6996 100644
--- a/gtk/ui/gtkfilechooserdialog.ui
+++ b/gtk/ui/gtkfilechooserdialog.ui
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<interface>
+<interface domain="gtk30">
   <!-- interface-requires gtk+ 3.10 -->
   <template class="GtkFileChooserDialog" parent="GtkDialog">
     <property name="role">GtkFileChooserDialog</property>
diff --git a/gtk/ui/gtkplacesview.ui b/gtk/ui/gtkplacesview.ui
index 9d2c39e9f9..9b025490b8 100644
--- a/gtk/ui/gtkplacesview.ui
+++ b/gtk/ui/gtkplacesview.ui
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<interface>
+<interface domain="gtk30">
   <requires lib="gtk+" version="3.16"/>
     <object class="GtkListStore" id="completion_store">
     <columns>
diff --git a/gtk/ui/gtkplacesviewrow.ui b/gtk/ui/gtkplacesviewrow.ui
index 6ca241f6ef..c46079bbcf 100644
--- a/gtk/ui/gtkplacesviewrow.ui
+++ b/gtk/ui/gtkplacesviewrow.ui
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<interface>
+<interface domain="gtk30">
   <requires lib="gtk+" version="3.16"/>
   <template class="GtkPlacesViewRow" parent="GtkListBoxRow">
     <property name="width_request">100</property>
diff --git a/gtk/ui/gtksidebarrow.ui b/gtk/ui/gtksidebarrow.ui
index 8f6f3073bb..7df67548ab 100644
--- a/gtk/ui/gtksidebarrow.ui
+++ b/gtk/ui/gtksidebarrow.ui
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<interface>
+<interface domain="gtk30">
   <template class="GtkSidebarRow" parent="GtkListBoxRow">
     <property name="visible">True</property>
     <property name="margin-top">1</property>