diff --git a/trunk/src/app/srs_app_gb28181.cpp b/trunk/src/app/srs_app_gb28181.cpp
index 7d4d303e5f..b75b17ab91 100644
--- a/trunk/src/app/srs_app_gb28181.cpp
+++ b/trunk/src/app/srs_app_gb28181.cpp
@@ -319,7 +319,6 @@ srs_error_t Srs28181TcpStreamListener::remove_conn(Srs28181TcpStreamConn* c)
     return err;
 }
 
-
 SrsLiveUdpListener::SrsLiveUdpListener(Srs28181UdpStreamListener* h, string i, int p)
 {
     handler = h;
@@ -338,7 +337,6 @@ SrsLiveUdpListener::SrsLiveUdpListener(Srs28181UdpStreamListener* h, string i, i
 }
 
 
-
 SrsOneCycleCoroutine::SrsOneCycleCoroutine(string n, ISrsCoroutineHandler* h, int cid)
 {
     name = n;