diff --git a/mocha/mocha-tests.ts b/mocha/mocha-tests.ts
index 19c869c136..597d9cbe2c 100644
--- a/mocha/mocha-tests.ts
+++ b/mocha/mocha-tests.ts
@@ -1,7 +1,5 @@
 /// <reference path="mocha.d.ts" />
 
-var mocha: Mocha;
-
 function test_describe() {
     describe('something', () => { });