diff --git a/gtk2_ardour/ui/editor_window.xml b/gtk2_ardour/ui/editor_window.xml
index e9f6c05485..6818af632c 100644
--- a/gtk2_ardour/ui/editor_window.xml
+++ b/gtk2_ardour/ui/editor_window.xml
@@ -25,6 +25,9 @@
winfont ="Arial 10"
macfont ="Helvetica 10"/>