diff --git a/src/ZenGradientGenerator.mjs b/src/ZenGradientGenerator.mjs
index c2b4374..ab88c0d 100644
--- a/src/ZenGradientGenerator.mjs
+++ b/src/ZenGradientGenerator.mjs
@@ -10,7 +10,7 @@
 
     init() {
       ChromeUtils.defineLazyGetter(this, 'panel', () => document.getElementById('PanelUI-zen-gradient-generator'));
-      ChromeUtils.defineLazyGetter(this, 'toolbox', () => document.getElementById('navigator-toolbox'));
+      ChromeUtils.defineLazyGetter(this, 'toolbox', () => document.getElementById('TabsToolbar'));
 
       this.initRotation();
       this.initCanvas();