diff --git a/client/client.cpp b/client/client.cpp
index 317ac1e..e2109db 100644
--- a/client/client.cpp
+++ b/client/client.cpp
@@ -63,7 +63,7 @@ void CClient::print_help(bool detail)
         return;
     }
 
-    constexpr char* sp = "==================================================";
+    std::string sp = "==================================================";
     TLOGI("{}", sp);
     TLOGW("#Get#");
     TLOGI("  des: Get all clients on server.");