diff --git a/src/objects.js b/src/objects.js
index c1ed200..be24f01 100644
--- a/src/objects.js
+++ b/src/objects.js
@@ -65,6 +65,7 @@ export class Sprite {
     this.angle = 0;
     this.src = src;
     this.srcOld = this.src;
+    this.ticker = null;
 
     this.loaded = false;