diff --git a/reactos/include/psdk/ntgdi.h b/reactos/include/psdk/ntgdi.h
index 1afc9671e6a..e20ddccf6c2 100644
--- a/reactos/include/psdk/ntgdi.h
+++ b/reactos/include/psdk/ntgdi.h
@@ -3630,4 +3630,9 @@ NtGdiMakeObjectUnXferable(
     IN HANDLE h
 );
 
+W32KAPI
+BOOL
+APIENTRY
+NtGdiInitSpool();
+
 #endif