diff --git a/1-js/8-oop/2-internal-external-interface/1-add-method-property-coffeemachine/solution.md b/1-js/8-oop/2-internal-external-interface/1-add-method-property-coffeemachine/solution.md
index 64982142..5c92acb6 100644
--- a/1-js/8-oop/2-internal-external-interface/1-add-method-property-coffeemachine/solution.md
+++ b/1-js/8-oop/2-internal-external-interface/1-add-method-property-coffeemachine/solution.md
@@ -20,7 +20,9 @@ function CoffeeMachine(power) {
   }
 
   this.run = function() {
+*!*
     timerId = setTimeout(onReady, getBoilTime());
+*/!*
   };
 
 *!*