--- a/browser/devtools/fontinspector/font-inspector.js
+++ b/browser/devtools/fontinspector/font-inspector.js
@@ -36,17 +36,17 @@ FontInspector.prototype = {
            this.inspector.sidebar.getCurrentTabID() == "fontinspector";
   },
 
   /**
    * Remove listeners.
    */
   destroy: function FI_destroy() {
     this.chromeDoc = null;
-    this.inspector.sidebar.off("layoutview-selected", this.onNewNode);
+    this.inspector.sidebar.off("fontinspector-selected", this.onNewNode);
     this.inspector.selection.off("new-node", this.onNewNode);
     this.showAllButton.removeEventListener("click", this.showAll);
   },
 
   /**
    * Selection 'new-node' event handler.
    */
   onNewNode: function FI_onNewNode() {