diff --git a/test/test.js b/test/test.js
index 401bcc269..585199b54 100644
--- a/test/test.js
+++ b/test/test.js
@@ -332,7 +332,7 @@
   }());
 
   /** Used to detect instrumented istanbul code coverage runs. */
-  var coverage = root.__coverage__ || root[lodashStable.findKey(root, function(value, key) {
+  var coverage = root.__coverage__ || root[lodashStable.find(lodashStable.keys(root), function(key) {
     return /^(?:\$\$cov_\d+\$\$)$/.test(key);
   })];