diff --git a/cocos/audio/CMakeLists.txt b/cocos/audio/CMakeLists.txt
index 8a60653bf0..1f0dde8d1f 100644
--- a/cocos/audio/CMakeLists.txt
+++ b/cocos/audio/CMakeLists.txt
@@ -83,7 +83,7 @@ elseif(APPLE)
         audio/include/AudioDecoderWav.h
         audio/include/AudioCache.h
         audio/apple/AudioPlayer.h
-		audio/apple/AudioDecoderEXT.h
+        audio/apple/AudioDecoderEXT.h
         audio/apple/AudioEngineImpl.h
         )
     set(COCOS_AUDIO_PLATFORM_SRC