diff --git a/ap/lib/libatext/ext_regist.h b/ap/lib/libatext/ext_regist.h
index 1cf2466..b648ded 100644
--- a/ap/lib/libatext/ext_regist.h
+++ b/ap/lib/libatext/ext_regist.h
@@ -26,4 +26,7 @@
 
 extern int ext_is_usermode(void);
 extern int ext_kwatchtest_regist(void);
+#ifdef _USE_VOICE_ALSA
+extern void ext_audio_regist_init(void);
+#endif	
 #endif