diff --git a/test/evidence_runner.js b/test/evidence_runner.js
index 7c13f669a..d5b4df6cb 100644
--- a/test/evidence_runner.js
+++ b/test/evidence_runner.js
@@ -108,7 +108,7 @@
     }
   }
 
-  var globals = [], expected = ['Zepto', '$', 'Evidence']
+  var globals = [], expected = ['Zepto', '$', 'Evidence', '_zid']
   for (var key in window) globals.push(key)
 
   function checkLeakedGlobals() {