diff --git a/plugins/plugin_installer/plugin_installer.py b/plugins/plugin_installer/plugin_installer.py
index ee0a744cf77d72cfa398fe3ffa8e36cd62c35107..72157e11f16dd98c521707dd7f055c9fd183f658 100644
--- a/plugins/plugin_installer/plugin_installer.py
+++ b/plugins/plugin_installer/plugin_installer.py
@@ -441,6 +441,7 @@ class PluginInstallerPluginConfigDialog(GajimPluginConfigDialog):
         self.GTK_BUILDER_FILE_PATH = self.plugin.local_file_path(
             'config_dialog.ui')
         self.xml = gtk.Builder()
+        self.xml.set_translation_domain('gajim_plugins')
         self.xml.add_objects_from_file(self.GTK_BUILDER_FILE_PATH, ['hbox111'])
         hbox = self.xml.get_object('hbox111')
         self.child.pack_start(hbox)