diff --git a/package.json b/package.json
index 91e0cfe..756f218 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "eventemitter-promise",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "description": "Event Emitter with lazy promise.",
   "main": "bin/EventEmitter.node.js",
   "scripts": {
diff --git a/src/EventEmitter.js b/src/EventEmitter.js
index a142919..4456f57 100644
--- a/src/EventEmitter.js
+++ b/src/EventEmitter.js
@@ -120,7 +120,7 @@ if (typeof(module) !== 'undefined' && module.exports) {
          * @private
          */
         _destroyPromise(event) {
-            this._promises[event].kill();
+            this._promises[event] && this._promises[event].kill();
             delete this._promises[event];
         }