diff --git a/core/basic/enum_converter.hpp b/core/basic/enum_converter.hpp
index eebbf0e..0686e52 100644
--- a/core/basic/enum_converter.hpp
+++ b/core/basic/enum_converter.hpp
@@ -16,6 +16,8 @@
 #include <typeinfo>
 #include <vector>
 
+#include "iflytopcpp/core/spdlogfactory/logger.hpp"
+
 namespace iflytop {
 namespace core {
 using namespace std;
@@ -34,13 +36,14 @@ class EnumConverter {
     if (it != _str2e.end()) {
       return it->second;
     }
-    return "unkown";
+    return fmt::format("unkown({})", (int)e);
   };
   T str2e(string s) {
     auto it = _e2str.find(s);
     if (it != _e2str.end()) {
       return it->second;
     }
+    throw std::invalid_argument(fmt::format("EnumConverter unkown convert ({})", s));
     return (T)-1;
   };
 };