diff --git a/param.go b/param.go
index 37d4d27..958f0b3 100644
--- a/param.go
+++ b/param.go
@@ -25,7 +25,7 @@ type BaseParam struct {
 	Value string
 }
 
-func (p BaseParam) ParamName() string {
+func (p *BaseParam) ParamName() string {
 	return p.Name
 }