diff --git a/guake/simplegladeapp.py b/guake/simplegladeapp.py
index 22d45a2..92ab76d 100644
--- a/guake/simplegladeapp.py
+++ b/guake/simplegladeapp.py
@@ -30,7 +30,7 @@ import tokenize
 
 
 class SimpleGladeApp:
-    def __init__(self, path, root=None, domain=None):
+    def __init__(self, path, root=None, domain='guake'):
         """
         Load a glade file specified by glade_filename, using root as
         root widget and domain as the domain for translations.
@@ -61,6 +61,7 @@ class SimpleGladeApp:
         self.glade = None
 
         self.builder = Gtk.Builder()
+        self.builder.set_translation_domain(domain)
         self.builder.add_from_file(self.glade_path)
 
         if root: