diff --git a/reactos/lib/user32/user32.def b/reactos/lib/user32/user32.def
index 9d1ae2a5dd1..7089196b6c7 100644
--- a/reactos/lib/user32/user32.def
+++ b/reactos/lib/user32/user32.def
@@ -324,7 +324,7 @@ GetScrollBarInfo@12
 GetScrollInfo@12
 GetScrollPos@8
 GetScrollRange@16
-;GetShellWindow
+GetShellWindow@0
 GetSubMenu@8
 GetSysColor@4
 GetSysColorBrush@4