--- a/browser/components/extensions/parent/ext-devtools-panels.js
+++ b/browser/components/extensions/parent/ext-devtools-panels.js
@@ -75,16 +75,17 @@ class ParentDevToolsPanel {
   }
 
   addPanel() {
     const {icon, title} = this.panelOptions;
     const extensionName = this.context.extension.name;
 
     this.toolbox.addAdditionalTool({
       id: this.id,
+      extensionId: this.context.extension.id,
       url: "chrome://browser/content/webext-panels.xul",
       icon: icon,
       label: title,
       tooltip: `DevTools Panel added by "${extensionName}" add-on.`,
       isTargetSupported: target => target.isLocalTab,
       build: (window, toolbox) => {
         if (toolbox !== this.toolbox) {
           throw new Error("Unexpected toolbox received on addAdditionalTool build property");