diff --git a/pkg/common/trace_log/ctx.go b/pkg/common/trace_log/ctx.go
index 87ffed4bf..73e4a9606 100644
--- a/pkg/common/trace_log/ctx.go
+++ b/pkg/common/trace_log/ctx.go
@@ -124,7 +124,7 @@ type FuncInfo struct {
 
 type Args map[string]interface{}
 
-func (a *Args) String() string {
+func (a Args) String() string {
 	bytes, _ := json.Marshal(a)
 	return string(bytes)
 }