diff --git a/data/gnome-wm-properties/openbox.desktop b/data/gnome-wm-properties/openbox.desktop
index eee0dd60..23e690e3 100644
--- a/data/gnome-wm-properties/openbox.desktop
+++ b/data/gnome-wm-properties/openbox.desktop
@@ -7,3 +7,6 @@ X-GNOME-WMName=Openbox
 
 # our config tool
 ConfigExec=obconf
+
+[Window Manager]
+SessionManaged=true