diff --git a/lib/mediator.js b/lib/mediator.js
index <HASH>..<HASH> 100644
--- a/lib/mediator.js
+++ b/lib/mediator.js
@@ -154,7 +154,7 @@
 
     for(; x<y; x++) {
       if (this._subscribers[x].id === identifier || this._subscribers[x].fn === identifier){
-        this._subscribers[x].priority = priority;
+        this._subscribers[x].options.priority = priority;
         break;
       }
     }
Update mediator.js

Priority is a property of options. Priority was being set on subscriber objects.