diff --git a/trunk/src/app/srs_app_config.cpp b/trunk/src/app/srs_app_config.cpp
index 9e2053c55..a2d6142b2 100644
--- a/trunk/src/app/srs_app_config.cpp
+++ b/trunk/src/app/srs_app_config.cpp
@@ -3934,6 +3934,11 @@ std::string SrsConfig::get_stream_caster_sip_candidate(SrsConfDirective* conf)
         return DEFAULT;
     }
 
+    conf = conf->get("sip");
+    if (!conf) {
+        return DEFAULT;
+    }
+
     conf = conf->get("candidate");
     if (!conf || conf->arg0().empty()) {
         return DEFAULT;
diff --git a/trunk/src/core/srs_core_version5.hpp b/trunk/src/core/srs_core_version5.hpp
index 4218cc5b1..95faef15d 100644
--- a/trunk/src/core/srs_core_version5.hpp
+++ b/trunk/src/core/srs_core_version5.hpp
@@ -9,6 +9,6 @@
 
 #define VERSION_MAJOR       5
 #define VERSION_MINOR       0
-#define VERSION_REVISION    76
+#define VERSION_REVISION    77
 
 #endif