--- a/browser/components/extensions/test/browser/browser_ext_contextMenus.js
+++ b/browser/components/extensions/test/browser/browser_ext_contextMenus.js
@@ -529,27 +529,27 @@ add_task(async function test_bookmark_co
         url,
         title,
         parentId: "toolbar_____",
       });
       await browser.contextMenus.create({
         title: "Get bookmark",
         contexts: ["bookmark"],
       });
-      browser.test.sendMessage("bookmark-created");
       browser.contextMenus.onClicked.addListener(async (info) => {
         browser.test.assertEq(newBookmark.id, info.bookmarkId, "Bookmark ID matches");
 
         let [bookmark] = await browser.bookmarks.get(info.bookmarkId);
         browser.test.assertEq(title, bookmark.title, "Bookmark title matches");
         browser.test.assertEq(url, bookmark.url, "Bookmark url matches");
         browser.test.assertFalse(info.hasOwnProperty("pageUrl"), "Context menu does not expose pageUrl");
         await browser.bookmarks.remove(info.bookmarkId);
         browser.test.sendMessage("test-finish");
       });
+      browser.test.sendMessage("bookmark-created");
     },
   });
   await extension.startup();
   await extension.awaitMessage("bookmark-created");
   let menu = await openChromeContextMenu(
     "placesContext",
     "#PersonalToolbar .bookmark-item:last-child");