diff --git a/class/Paym.js b/class/Paym.js
index c3c15db..c43db6f 100644
--- a/class/Paym.js
+++ b/class/Paym.js
@@ -12,7 +12,7 @@ export class Paym {
     this._isPaid = null;
   }
 
-  get fee() {
+  static get fee() {
     return 0.003;
   }