diff --git a/dlls/user/defdlg.c b/dlls/user/defdlg.c
index 28780abd5e1..daf663136d7 100644
--- a/dlls/user/defdlg.c
+++ b/dlls/user/defdlg.c
@@ -313,9 +313,6 @@ static LRESULT DEFDLG_Proc( HWND hwnd, UINT msg, WPARAM wParam,
             PostMessageA( hwnd, WM_COMMAND, MAKEWPARAM(IDCANCEL, BN_CLICKED),
                             (LPARAM)GetDlgItem( hwnd, IDCANCEL ) );
             return 0;
-
-        case WM_NOTIFYFORMAT:
-            return DefWindowProcA( hwnd, msg, wParam, lParam );
     }
     return 0;
 }