diff --git a/stl/inc/system_error b/stl/inc/system_error
index 04e227fc531..42b2ab7090c 100644
--- a/stl/inc/system_error
+++ b/stl/inc/system_error
@@ -473,6 +473,8 @@ private:
     }
 
 protected:
+    _System_error(error_code _Errcode) : runtime_error(_Errcode.message()), _Mycode(_Errcode) {}
+
     _System_error(error_code _Errcode, const string& _Message)
         : runtime_error(_Makestr(_Errcode, _Message)), _Mycode(_Errcode) {}
 
@@ -484,13 +486,13 @@ private:
     using _Mybase = _System_error;
 
 public:
-    system_error(error_code _Errcode) : _Mybase(_Errcode, "") {}
+    system_error(error_code _Errcode) : _Mybase(_Errcode) {}
 
     system_error(error_code _Errcode, const string& _Message) : _Mybase(_Errcode, _Message) {}
 
     system_error(error_code _Errcode, const char* _Message) : _Mybase(_Errcode, _Message) {}
 
-    system_error(int _Errval, const error_category& _Errcat) : _Mybase(error_code(_Errval, _Errcat), "") {}
+    system_error(int _Errval, const error_category& _Errcat) : _Mybase(error_code(_Errval, _Errcat)) {}
 
     system_error(int _Errval, const error_category& _Errcat, const string& _Message)
         : _Mybase(error_code(_Errval, _Errcat), _Message) {}