diff --git a/browser/modules/URILoadingHelper.sys.mjs b/browser/modules/URILoadingHelper.sys.mjs
index a240c572036d..5f9ec937fb09 100644
--- a/browser/modules/URILoadingHelper.sys.mjs
+++ b/browser/modules/URILoadingHelper.sys.mjs
@@ -563,7 +563,7 @@ export const URILoadingHelper = {
         let IsWindowFloorpSpecial = FloorpServices.wm.IsFloorpSpecialWindow(w);
         if (
           Services.prefs.getBoolPref("floorp.browser.sidebar2.addons.enabled") &&
-          !IsWindowFloorpSpecial
+          IsWindowFloorpSpecial
         ) {
           if (FloorpServices.wm.getRecentWindowExcludeFloorpSpecialWindows()) {
             w = FloorpServices.wm.getRecentWindowExcludeFloorpSpecialWindows();