diff --git a/packages/snjs/mocha/test.html b/packages/snjs/mocha/test.html
index ed3f1a387..2dc5e6bfa 100644
--- a/packages/snjs/mocha/test.html
+++ b/packages/snjs/mocha/test.html
@@ -38,8 +38,8 @@
   <script type="module">
     import MainRegistry from './TestRegistry/MainRegistry.js'
 
-    const vaultTestsEnabled = urlParams.get('vaults') === 'enabled' ? true : false;
-
+    const urlSearchParams = new URLSearchParams(window.location.search);
+    const vaultTestsEnabled = urlSearchParams.get('vaults') === 'enabled' ? true : false;
     MainRegistry.VaultTests.enabled = MainRegistry.VaultTests.enabled || vaultTestsEnabled;
 
     const loadTest = (fileName) => {