diff --git a/app/scanner2/custom_file_dialog.h b/app/scanner2/custom_file_dialog.h
index 08abdd7b..c29793d2 100644
--- a/app/scanner2/custom_file_dialog.h
+++ b/app/scanner2/custom_file_dialog.h
@@ -10,7 +10,7 @@
 #include <string>
 #include "base/HGBase.h"
 
-#if defined (HG_CMP_MSC)
+#if !defined (HG_CMP_MSC)
     #define USE_FILE_DLG_WITHOUT_PROMPT
 #endif