--- a/devtools/client/framework/test/browser_toolbox_dynamic_registration.js
+++ b/devtools/client/framework/test/browser_toolbox_dynamic_registration.js
@@ -21,16 +21,17 @@ function testRegister(aToolbox)
   gDevTools.once("tool-registered", toolRegistered);
 
   gDevTools.registerTool({
     id: "test-tool",
     label: "Test Tool",
     inMenu: true,
     isTargetSupported: () => true,
     build: function () {},
+    key: "t"
   });
 }
 
 function toolRegistered(event, toolId)
 {
   is(toolId, "test-tool", "tool-registered event handler sent tool id");
 
   ok(gDevTools.getToolDefinitionMap().has(toolId), "tool added to map");
@@ -39,16 +40,18 @@ function toolRegistered(event, toolId)
   let doc = toolbox.doc;
   let tab = doc.getElementById("toolbox-tab-" + toolId);
   ok(tab, "new tool's tab exists in toolbox UI");
 
   let panel = doc.getElementById("toolbox-panel-" + toolId);
   ok(panel, "new tool's panel exists in toolbox UI");
 
   for (let win of getAllBrowserWindows()) {
+    let key = win.document.getElementById("key_" + toolId);
+    ok(key, "key for new tool added to every browser window");
     let menuitem = win.document.getElementById("menuitem_" + toolId);
     ok(menuitem, "menu item of new tool added to every browser window");
   }
 
   // then unregister it
   testUnregister();
 }
 
@@ -78,16 +81,18 @@ function toolUnregistered(event, toolId)
   let doc = toolbox.doc;
   let tab = doc.getElementById("toolbox-tab-" + toolId);
   ok(!tab, "tool's tab was removed from the toolbox UI");
 
   let panel = doc.getElementById("toolbox-panel-" + toolId);
   ok(!panel, "tool's panel was removed from toolbox UI");
 
   for (let win of getAllBrowserWindows()) {
+    let key = win.document.getElementById("key_" + toolId);
+    ok(!key, "key removed from every browser window");
     let menuitem = win.document.getElementById("menuitem_" + toolId);
     ok(!menuitem, "menu item removed from every browser window");
   }
 
   cleanup();
 }
 
 function cleanup()