diff --git a/trunk/conf/full.conf b/trunk/conf/full.conf
index 6dfb8eca56..646d82b2be 100644
--- a/trunk/conf/full.conf
+++ b/trunk/conf/full.conf
@@ -446,8 +446,8 @@ rtc_server {
     # Whether pad first packet for GSO for padding bytes.
     # If 0, disable padding for GSO.
     # @remark The max padding size is 0x7f(127).
-    # default: 0
-    padding         0;
+    # default: 127
+    padding         127;
 }
 
 vhost rtc.vhost.srs.com {
diff --git a/trunk/src/app/srs_app_config.cpp b/trunk/src/app/srs_app_config.cpp
index 8df22fea49..fcea9fde38 100644
--- a/trunk/src/app/srs_app_config.cpp
+++ b/trunk/src/app/srs_app_config.cpp
@@ -4843,7 +4843,7 @@ bool SrsConfig::get_rtc_server_gso2()
 
 int SrsConfig::get_rtc_server_padding()
 {
-    static int DEFAULT = 0;
+    static int DEFAULT = 127;
 
     SrsConfDirective* conf = root->get("rtc_server");
     if (!conf) {