diff --git a/data/glade/chat_to_muc_window.glade b/data/glade/chat_to_muc_window.glade
index d21cb00fe..fe48e057f 100644
--- a/data/glade/chat_to_muc_window.glade
+++ b/data/glade/chat_to_muc_window.glade
@@ -34,6 +34,7 @@ Select the contacts you want to invite
GTK_SHADOW_IN
+ 300
True
True
False