diff --git a/headers/private/app/ServerProtocol.h b/headers/private/app/ServerProtocol.h
index 1e6f0ab277..511f5b4a60 100644
--- a/headers/private/app/ServerProtocol.h
+++ b/headers/private/app/ServerProtocol.h
@@ -257,6 +257,7 @@ AS_LAYER_DRAW_BITMAP_ASYNC_IN_RECT,
 AS_LAYER_DRAW_BITMAP_ASYNC_AT_POINT,
 AS_LAYER_DRAW_BITMAP_SYNC_IN_RECT,
 AS_LAYER_DRAW_BITMAP_SYNC_AT_POINT,
+AS_LAYER_SET_EVENT_MASK,
 
 AS_LAYER_DRAW_STRING,
 AS_LAYER_SET_CLIP_REGION,