diff --git a/modules/twainui/twainui.cpp b/modules/twainui/twainui.cpp
index ef46e941..345177c0 100644
--- a/modules/twainui/twainui.cpp
+++ b/modules/twainui/twainui.cpp
@@ -313,12 +313,14 @@ int close_ui(int which)
         }
         else
         {
+#if 0
             QApplication::exit();
 
             HGBase_CloseThread(g_hThread);
             g_hThread = NULL;
             HGBase_DestroyEvent(g_event);
             g_event = NULL;
+#endif
         }
     }