diff --git a/index.js b/index.js
index 94e0441..72152b4 100644
--- a/index.js
+++ b/index.js
@@ -50,7 +50,7 @@ class BackgroundTimer {
   }
 
   backgroundClockMethod(callback, delay) {
-    this.backgroundTimer = setTimeout(() => {
+    this.backgroundTimer = this.setTimeout(() => {
       callback();
       this.backgroundClockMethod(callback, delay);
     },