diff --git a/trunk/src/app/srs_app_gb28181.cpp b/trunk/src/app/srs_app_gb28181.cpp
index f0a1045cf..d54d6cf62 100644
--- a/trunk/src/app/srs_app_gb28181.cpp
+++ b/trunk/src/app/srs_app_gb28181.cpp
@@ -1565,6 +1565,9 @@ SrsGbMuxer::~SrsGbMuxer()
     close();
 
     srs_freep(avc_);
+    srs_freep(aac_);
+    srs_freep(queue_);
+    srs_freep(pprint_);
 }
 
 srs_error_t SrsGbMuxer::initialize(std::string output)