diff --git a/libmalcontent-ui/restrict-applications-dialog.ui b/libmalcontent-ui/restrict-applications-dialog.ui
index e7244ba..4678124 100644
--- a/libmalcontent-ui/restrict-applications-dialog.ui
+++ b/libmalcontent-ui/restrict-applications-dialog.ui
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Copyright © 2020 Endless, Inc. -->
-<interface>
+<interface domain="malcontent">
   <requires lib="gtk+" version="3.12"/>
   <template class="MctRestrictApplicationsDialog" parent="GtkDialog">
     <property name="title" translatable="yes">Restrict Applications</property>
diff --git a/libmalcontent-ui/restrict-applications-selector.ui b/libmalcontent-ui/restrict-applications-selector.ui
index 6b5bdd9..9930db2 100644
--- a/libmalcontent-ui/restrict-applications-selector.ui
+++ b/libmalcontent-ui/restrict-applications-selector.ui
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Copyright © 2020 Endless, Inc. -->
-<interface>
+<interface domain="malcontent">
   <requires lib="gtk+" version="3.12"/>
   <template class="MctRestrictApplicationsSelector" parent="GtkBox">
     <child>
diff --git a/libmalcontent-ui/user-controls.ui b/libmalcontent-ui/user-controls.ui
index 87841f3..6c52573 100644
--- a/libmalcontent-ui/user-controls.ui
+++ b/libmalcontent-ui/user-controls.ui
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Copyright © 2018, 2019, 2020 Endless, Inc. -->
-<interface>
+<interface domain="malcontent">
   <requires lib="gtk+" version="3.12"/>
   <template class="MctUserControls" parent="GtkGrid">
     <property name="visible">True</property>