--- a/browser/components/newtab/lib/TopSitesFeed.jsm
+++ b/browser/components/newtab/lib/TopSitesFeed.jsm
@@ -423,17 +423,17 @@ this.TopSitesFeed = class TopSitesFeed {
       );
 
       const tryToInsertSearchShortcut = async shortcut => {
         const nextAvailable = pinnedSites.indexOf(null);
         // Only add a search shortcut if the site isn't already pinned, we
         // haven't previously inserted it, there's space to pin it, and the
         // search engine is available in Firefox
         if (
-          !pinnedSites.find(s => s && s.hostname === shortcut.shortURL) &&
+          !pinnedSites.find(s => s && shortURL(s) === shortcut.shortURL) &&
           !prevInsertedShortcuts.includes(shortcut.shortURL) &&
           nextAvailable > -1 &&
           (await checkHasSearchEngine(shortcut.keyword))
         ) {
           const site = await this.topSiteToSearchTopSite({ url: shortcut.url });
           this._pinSiteAt(site, nextAvailable);
           pinnedSites[nextAvailable] = site;
           newInsertedShortcuts.push(shortcut.shortURL);