diff --git a/Source/Libs/GtkSharp/GtkSharp.metadata b/Source/Libs/GtkSharp/GtkSharp.metadata
index e8c1db5d8..b6f93a5f8 100755
--- a/Source/Libs/GtkSharp/GtkSharp.metadata
+++ b/Source/Libs/GtkSharp/GtkSharp.metadata
@@ -847,6 +847,7 @@
1
ProcessEvent
out
+ out
out
GdkEventMask
GetIsMapped