diff --git a/trunk/src/app/srs_app_config.cpp b/trunk/src/app/srs_app_config.cpp
index 8ad0d826a..ede53a66a 100644
--- a/trunk/src/app/srs_app_config.cpp
+++ b/trunk/src/app/srs_app_config.cpp
@@ -3433,10 +3433,9 @@ srs_error_t SrsConfig::parse_argv(int& i, char** argv)
 void SrsConfig::print_help(char** argv)
 {
     printf(
-           RTMP_SIG_SRS_SERVER " " RTMP_SIG_SRS_COPYRIGHT "\n"
+           RTMP_SIG_SRS_SERVER "\n"
            "License: " RTMP_SIG_SRS_LICENSE "\n"
            "Primary: " RTMP_SIG_SRS_PRIMARY "\n"
-           "Authors: " RTMP_SIG_SRS_AUTHROS "\n"
            "Build: " SRS_AUTO_BUILD_DATE " Configuration:" SRS_AUTO_USER_CONFIGURE "\n"
            "Features:" SRS_AUTO_CONFIGURE "\n""\n"
            "Usage: %s [-h?vVgG] [[-t] -c <filename>]\n"
@@ -3448,7 +3447,6 @@ void SrsConfig::print_help(char** argv)
            "   -t                  : test configuration file, exit(error_code).\n"
            "   -c filename         : use configuration file for SRS\n"
            "\n"
-           RTMP_SIG_SRS_WEB "\n"
            RTMP_SIG_SRS_URL "\n"
            "Email: " RTMP_SIG_SRS_EMAIL "\n"
            "\n"
diff --git a/trunk/src/app/srs_app_http_api.cpp b/trunk/src/app/srs_app_http_api.cpp
index b31702ef2..8671fcc62 100644
--- a/trunk/src/app/srs_app_http_api.cpp
+++ b/trunk/src/app/srs_app_http_api.cpp
@@ -552,8 +552,6 @@ srs_error_t SrsGoApiAuthors::serve_http(ISrsHttpResponseWriter* w, ISrsHttpMessa
     
     data->set("primary", SrsJsonAny::str(RTMP_SIG_SRS_PRIMARY));
     data->set("license", SrsJsonAny::str(RTMP_SIG_SRS_LICENSE));
-    data->set("copyright", SrsJsonAny::str(RTMP_SIG_SRS_COPYRIGHT));
-    data->set("authors", SrsJsonAny::str(RTMP_SIG_SRS_AUTHROS));
     data->set("contributors", SrsJsonAny::str(SRS_AUTO_CONSTRIBUTORS));
     
     return srs_api_response(w, r, obj->dumps());
diff --git a/trunk/src/app/srs_app_source.cpp b/trunk/src/app/srs_app_source.cpp
index 1560a8794..7115c3db9 100755
--- a/trunk/src/app/srs_app_source.cpp
+++ b/trunk/src/app/srs_app_source.cpp
@@ -1591,8 +1591,7 @@ srs_error_t SrsMetaCache::update_data(SrsMessageHeader* header, SrsOnMetaDataPac
     // add server info to metadata
     metadata->metadata->set("server", SrsAmf0Any::str(RTMP_SIG_SRS_SERVER));
     metadata->metadata->set("srs_primary", SrsAmf0Any::str(RTMP_SIG_SRS_PRIMARY));
-    metadata->metadata->set("srs_authors", SrsAmf0Any::str(RTMP_SIG_SRS_AUTHROS));
-    
+
     // version, for example, 1.0.0
     // add version to metadata, please donot remove it, for debug.
     metadata->metadata->set("server_version", SrsAmf0Any::str(RTMP_SIG_SRS_VERSION));
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index 56a727ed4..95cd3c018 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -35,13 +35,9 @@
 // The project informations, may sent to client in HTTP header or RTMP metadata.
 #define RTMP_SIG_SRS_KEY "SRS"
 #define RTMP_SIG_SRS_CODE "OuXuli"
-#define RTMP_SIG_SRS_AUTHROS "winlin,wenjie.zhao"
-#define RTMP_SIG_SRS_WEB "http://ossrs.net"
 #define RTMP_SIG_SRS_EMAIL "winlin@vip.126.com"
-#define RTMP_SIG_SRS_ROLE "cluster"
 #define RTMP_SIG_SRS_URL "https://github.com/ossrs/srs"
 #define RTMP_SIG_SRS_LICENSE "The MIT License (MIT)"
-#define RTMP_SIG_SRS_COPYRIGHT "Copyright (c) 2013-2019 " RTMP_SIG_SRS_KEY "(" RTMP_SIG_SRS_AUTHROS ")"
 #define RTMP_SIG_SRS_PRIMARY RTMP_SIG_SRS_KEY "/" VERSION_STABLE_BRANCH
 #define RTMP_SIG_SRS_HANDSHAKE RTMP_SIG_SRS_KEY "(" RTMP_SIG_SRS_VERSION ")"
 #define RTMP_SIG_SRS_VERSION SRS_XSTR(VERSION_MAJOR) "." SRS_XSTR(VERSION_MINOR) "." SRS_XSTR(VERSION_REVISION)
diff --git a/trunk/src/main/srs_main_server.cpp b/trunk/src/main/srs_main_server.cpp
index 25577f7d4..339af3357 100644
--- a/trunk/src/main/srs_main_server.cpp
+++ b/trunk/src/main/srs_main_server.cpp
@@ -119,8 +119,7 @@ srs_error_t do_main(int argc, char** argv)
     
     // config already applied to log.
     srs_trace(RTMP_SIG_SRS_SERVER ", stable is " RTMP_SIG_SRS_PRIMARY);
-    srs_trace("license: " RTMP_SIG_SRS_LICENSE ", " RTMP_SIG_SRS_COPYRIGHT);
-    srs_trace("authors: " RTMP_SIG_SRS_AUTHROS);
+    srs_trace("license: " RTMP_SIG_SRS_LICENSE);
     srs_trace("contributors: " SRS_AUTO_CONSTRIBUTORS);
     srs_trace("build: %s, configure:%s, uname: %s", SRS_AUTO_BUILD_DATE, SRS_AUTO_USER_CONFIGURE, SRS_AUTO_UNAME);
     srs_trace("configure detail: " SRS_AUTO_CONFIGURE);
diff --git a/trunk/src/protocol/srs_rtmp_stack.cpp b/trunk/src/protocol/srs_rtmp_stack.cpp
index 21fe1826f..5ea56cbbf 100644
--- a/trunk/src/protocol/srs_rtmp_stack.cpp
+++ b/trunk/src/protocol/srs_rtmp_stack.cpp
@@ -2385,15 +2385,11 @@ srs_error_t SrsRtmpServer::response_connect_app(SrsRequest *req, const char* ser
     data->set("srs_sig", SrsAmf0Any::str(RTMP_SIG_SRS_KEY));
     data->set("srs_server", SrsAmf0Any::str(RTMP_SIG_SRS_SERVER));
     data->set("srs_license", SrsAmf0Any::str(RTMP_SIG_SRS_LICENSE));
-    data->set("srs_role", SrsAmf0Any::str(RTMP_SIG_SRS_ROLE));
     data->set("srs_url", SrsAmf0Any::str(RTMP_SIG_SRS_URL));
     data->set("srs_version", SrsAmf0Any::str(RTMP_SIG_SRS_VERSION));
-    data->set("srs_site", SrsAmf0Any::str(RTMP_SIG_SRS_WEB));
     data->set("srs_email", SrsAmf0Any::str(RTMP_SIG_SRS_EMAIL));
-    data->set("srs_copyright", SrsAmf0Any::str(RTMP_SIG_SRS_COPYRIGHT));
     data->set("srs_primary", SrsAmf0Any::str(RTMP_SIG_SRS_PRIMARY));
-    data->set("srs_authors", SrsAmf0Any::str(RTMP_SIG_SRS_AUTHROS));
-    
+
     if (server_ip) {
         data->set("srs_server_ip", SrsAmf0Any::str(server_ip));
     }
diff --git a/trunk/src/service/srs_service_rtmp_conn.cpp b/trunk/src/service/srs_service_rtmp_conn.cpp
index 575c151c8..c447ea020 100644
--- a/trunk/src/service/srs_service_rtmp_conn.cpp
+++ b/trunk/src/service/srs_service_rtmp_conn.cpp
@@ -118,14 +118,10 @@ srs_error_t SrsBasicRtmpClient::do_connect_app(string local_ip, bool debug)
     data->set("srs_sig", SrsAmf0Any::str(RTMP_SIG_SRS_KEY));
     data->set("srs_server", SrsAmf0Any::str(RTMP_SIG_SRS_SERVER));
     data->set("srs_license", SrsAmf0Any::str(RTMP_SIG_SRS_LICENSE));
-    data->set("srs_role", SrsAmf0Any::str(RTMP_SIG_SRS_ROLE));
     data->set("srs_url", SrsAmf0Any::str(RTMP_SIG_SRS_URL));
     data->set("srs_version", SrsAmf0Any::str(RTMP_SIG_SRS_VERSION));
-    data->set("srs_site", SrsAmf0Any::str(RTMP_SIG_SRS_WEB));
     data->set("srs_email", SrsAmf0Any::str(RTMP_SIG_SRS_EMAIL));
-    data->set("srs_copyright", SrsAmf0Any::str(RTMP_SIG_SRS_COPYRIGHT));
     data->set("srs_primary", SrsAmf0Any::str(RTMP_SIG_SRS_PRIMARY));
-    data->set("srs_authors", SrsAmf0Any::str(RTMP_SIG_SRS_AUTHROS));
     // for edge to directly get the id of client.
     data->set("srs_pid", SrsAmf0Any::number(getpid()));
     data->set("srs_id", SrsAmf0Any::number(_srs_context->get_id()));