diff --git a/reactos/win32ss/user/ntuser/callback.c b/reactos/win32ss/user/ntuser/callback.c
index 2f3ea9634f2..4ab876cc44f 100644
--- a/reactos/win32ss/user/ntuser/callback.c
+++ b/reactos/win32ss/user/ntuser/callback.c
@@ -346,7 +346,7 @@ co_IntCallWindowProc(WNDPROC Proc,
                                &ResultLength);
    if (!NT_SUCCESS(Status))
    {
-      ERR("Error Callback to User space Status %lx\n",Status);
+      ERR("Error Callback to User space Status %lx Message %d\n",Status,Message);
       UserEnterCo();
       return 0;
    }