diff --git a/package.json b/package.json
index 0d47c5754caaac5c73cc16ad8f60eae2dbd437fb..14c45f1ad70d299b3c64dc9d5f747f2d41682a65 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   },
   "scripts": {
     "lint": "./node_modules/jshint/bin/jshint",
-    "test": "mocha"
+    "test": "mocha -r jsdom-global/register"
   },
   "type": "module"
 }