diff --git a/tools/cjs-jasmine/index.ts b/tools/cjs-jasmine/index.ts
index ba5193597d..82f1bfd08e 100644
--- a/tools/cjs-jasmine/index.ts
+++ b/tools/cjs-jasmine/index.ts
@@ -3,6 +3,7 @@
 var glob = require('glob');
 var JasmineRunner = require('jasmine');
 var path = require('path');
+require('source-map-support').install();
 // require('es6-shim/es6-shim.js');
 require('zone.js/dist/zone-node.js');
 require('zone.js/dist/long-stack-trace-zone.js');