diff --git a/win32ss/printing/base/winspool/ports.c b/win32ss/printing/base/winspool/ports.c
index 2dd27556a8a..5f8353c54b3 100644
--- a/win32ss/printing/base/winspool/ports.c
+++ b/win32ss/printing/base/winspool/ports.c
@@ -77,7 +77,7 @@ StartPortThread( LPWSTR pName, HWND hWnd, LPWSTR pPortName, PPfpFunction fpFunct
 
     CloseHandle( htHandle );
 
-    while ( MsgWaitForMultipleObjects( 1, &PortThreadInfo.hEvent, FALSE, INFINITE, QS_SENDMESSAGE|QS_ALLEVENTS ) == 1 )
+    while ( MsgWaitForMultipleObjects( 1, &PortThreadInfo.hEvent, FALSE, INFINITE, QS_ALLINPUT ) == 1 )
     {
         while ( PeekMessageW( &Msg, NULL, 0, 0, PM_REMOVE ) )
         {