diff --git a/test/test_index.js b/test/test_index.js
index caa7554..06421f4 100644
--- a/test/test_index.js
+++ b/test/test_index.js
@@ -1,2 +1,2 @@
-var testsContext = require.context('.', true, /_spec$/);
+var testsContext = require.context('.', true, /_spec\.js$/);
 testsContext.keys().forEach(testsContext);