diff --git a/native/userchrome/profile/chrome/pwa/content/browser.jsm b/native/userchrome/profile/chrome/pwa/content/browser.jsm
index fdb3ea41..35e5259a 100644
--- a/native/userchrome/profile/chrome/pwa/content/browser.jsm
+++ b/native/userchrome/profile/chrome/pwa/content/browser.jsm
@@ -324,7 +324,16 @@ class PwaBrowser {
     // Also un-focus the URL bar in case it is focused for some reason
     document.getElementById('urlbar').removeAttribute('focused');
 
+    // Restore the original toolbar visibility
     window.toolbar.visible = originalToolbarVisibility;
+
+    // Prevent error when changing search mode when `searchModeSwitcher` is undefined
+    Object.defineProperty(window.gURLBar, 'searchMode', {
+      set: function (searchMode) {
+        this.setSearchMode(searchMode, this.window.gBrowser.selectedBrowser);
+        this.searchModeSwitcher?.onSearchModeChanged();
+      },
+    });
   }
 
   setDisplayModeStandalone () {