diff --git a/trunk/src/core/srs_core_protocol.cpp b/trunk/src/core/srs_core_protocol.cpp
old mode 100755
new mode 100644
index 134d7a72a..a17e632cf
--- a/trunk/src/core/srs_core_protocol.cpp
+++ b/trunk/src/core/srs_core_protocol.cpp
@@ -3365,3 +3365,4 @@ int SrsUserControlPacket::encode_packet(SrsStream* stream)
 	
 	return ret;
 }
+