diff --git a/Source/vChewing-Bridging-Header.h b/Source/vChewing-Bridging-Header.h
index 1fa833cc..5ba232f6 100644
--- a/Source/vChewing-Bridging-Header.h
+++ b/Source/vChewing-Bridging-Header.h
@@ -2,5 +2,6 @@
 //  Use this file to import your target's public headers that you would like to expose to Swift.
 //
 
+#import "frmAboutWindow.h"
 extern void LTLoadLanguageModel(void);
 extern void LTLoadUserLanguageModelFile(void);