1 files changed, 1 insertions, 0 deletions
diff --git a/obt/prop.h b/obt/prop.h
index 9c4ace33..b30232e9 100644
--- a/obt/prop.h
+++ b/obt/prop.h
@@ -148,6 +148,7 @@ typedef enum {
     OBT_PROP_NET_WM_ICON_GEOMETRY,
     OBT_PROP_NET_WM_PID,
     OBT_PROP_NET_WM_ALLOWED_ACTIONS,
+    OBT_PROP_NET_WM_WINDOW_OPACITY,
     OBT_PROP_NET_WM_USER_TIME,
 /*  OBT_PROP_NET_WM_USER_TIME_WINDOW, */
     OBT_PROP_NET_FRAME_EXTENTS,