diff --git a/src/doodle3dbox.js b/src/doodle3dbox.js
index fb85173..fd3c6fe 100644
--- a/src/doodle3dbox.js
+++ b/src/doodle3dbox.js
@@ -33,7 +33,7 @@ export default class Doodle3DBox extends EventDispatcher {
   }
   setAutoUpdate(autoUpdate = true, updateInterval = 1000) {
     this.updateInterval = updateInterval;
-    if (this.autoUpdate === autoUpdate) return;
+    if (this.autoUpdate === autoUpdate) return this;
 
     this.autoUpdate = autoUpdate;
     if (autoUpdate) this._update();
diff --git a/src/doodle3dmanager.js b/src/doodle3dmanager.js
index 871d7f9..3b8ddac 100644
--- a/src/doodle3dmanager.js
+++ b/src/doodle3dmanager.js
@@ -24,7 +24,7 @@ export default class Doodle3DManager extends EventDispatcher {
   }
   setAutoUpdate(autoUpdate = true, updateInterval = 1000) {
     this.updateInterval = updateInterval;
-    if (this.autoUpdate === autoUpdate) return;
+    if (this.autoUpdate === autoUpdate) return this;
 
     this.autoUpdate = autoUpdate;
     if (autoUpdate) this._update();