diff --git a/index.js b/index.js
index 3db01d2..a60a484 100644
--- a/index.js
+++ b/index.js
@@ -20,7 +20,7 @@ class RNCallKeep {
   }
 
   removeEventListener(type, handler) {
-    const listener = _callkitEventHandlers.get(handler);
+    const listener = this._callkitEventHandlers.get(handler);
     if (!listener) {
       return;
     }