diff --git a/trunk/src/kernel/srs_kernel_ts.cpp b/trunk/src/kernel/srs_kernel_ts.cpp
index 2d6c0f1a4..f9b17da50 100644
--- a/trunk/src/kernel/srs_kernel_ts.cpp
+++ b/trunk/src/kernel/srs_kernel_ts.cpp
@@ -2939,7 +2939,7 @@ int SrsTsCache::do_cache_aac(SrsAvcAacCodec* codec, SrsCodecSample* sample)
     return ret;
 }
 
-void srs_avc_insert_aud(SrsSimpleBuffer* payload, bool& aud_inserted)
+void srs_avc_insert_aud(SrsSimpleStream* payload, bool& aud_inserted)
 {
     // mux the samples in annexb format,
     // H.264-AVC-ISO_IEC_14496-10-2012.pdf, page 324.