diff --git a/src/history_window.py b/src/history_window.py
index 87e7a6c14..2f222aa38 100644
--- a/src/history_window.py
+++ b/src/history_window.py
@@ -33,6 +33,7 @@ import calendar
 
 import gtkgui_helpers
 import conversation_textview
+import dialogs
 
 from common import gajim
 from common import helpers