diff --git a/cache/conv.go b/cache/conv.go
index dbdff1c7..87800586 100644
--- a/cache/conv.go
+++ b/cache/conv.go
@@ -28,7 +28,7 @@ func GetString(v interface{}) string {
 		return string(result)
 	default:
 		if v != nil {
-			return fmt.Sprintf("%v", result)
+			return fmt.Sprint(result)
 		}
 	}
 	return ""
diff --git a/param/options.go b/param/options.go
index 6fe10108..0692f9d1 100644
--- a/param/options.go
+++ b/param/options.go
@@ -19,7 +19,7 @@ var InBody MethodParamOption = func(p *MethodParam) {
 func Default(defValue interface{}) MethodParamOption {
 	return func(p *MethodParam) {
 		if defValue != nil {
-			p.defValue = fmt.Sprintf("%v", defValue)
+			p.defValue = fmt.Sprint(defValue)
 		}
 	}
 }