diff --git a/src/snconfig.ui b/src/snconfig.ui
index 2f95a7d..1b0b2c7 100644
--- a/src/snconfig.ui
+++ b/src/snconfig.ui
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Generated with glade 3.18.3 -->
-<interface>
+<interface domain="xfce4-sntray-plugin">
   <requires lib="gtk+" version="3.12"/>
   <object class="GtkAdjustment" id="adj-indexes">
     <property name="lower">-10000000</property>