diff --git a/framework/cybertron/record/record_base.cpp b/framework/cybertron/record/record_base.cpp
index 95e39cddedb724f481c663ece22059a93e0ecf42..2dea0cb32a31d8e51594dc57b150dafc1145f2d5 100644
--- a/framework/cybertron/record/record_base.cpp
+++ b/framework/cybertron/record/record_base.cpp
@@ -58,7 +58,7 @@ const std::string& RecordBase::GetMessageType(
   if (search != channel_message_type_map_.end()) {
     return search->second;
   }
-  return "";
+  return g_empty_string;
 }
 
 const std::string& RecordBase::GetProtoDesc(
@@ -67,7 +67,7 @@ const std::string& RecordBase::GetProtoDesc(
   if (search != channel_proto_desc_map_.end()) {
     return search->second;
   }
-  return "";
+  return g_empty_string;
 }
 
 }  // namespace record
diff --git a/framework/cybertron/record/record_base.h b/framework/cybertron/record/record_base.h
index 8d793cfd4d38a6fcb88d5829c492b4b95fef5e3b..59b2494e4a953c9a896da4aa7d2c59baa497fe42 100644
--- a/framework/cybertron/record/record_base.h
+++ b/framework/cybertron/record/record_base.h
@@ -33,6 +33,8 @@ namespace apollo {
 namespace cybertron {
 namespace record {
 
+static std::string g_empty_string = "";
+
 class RecordBase {
  public:
   RecordBase();