diff --git a/DataStream.js/DataStream.js-tests.ts b/datastream.js/datastream.js-tests.ts
similarity index 98%
rename from DataStream.js/DataStream.js-tests.ts
rename to datastream.js/datastream.js-tests.ts
index 71bb08537e..94fb86f367 100644
--- a/DataStream.js/DataStream.js-tests.ts
+++ b/datastream.js/datastream.js-tests.ts
@@ -1,4 +1,4 @@
-/// <reference path="DataStream.js.d.ts" />
+/// <reference path="datastream.js.d.ts" />
 
 var buf = new ArrayBuffer(100);
 var ds = new DataStream(buf);
diff --git a/DataStream.js/DataStream.js.d.ts b/datastream.js/datastream.js.d.ts
similarity index 100%
rename from DataStream.js/DataStream.js.d.ts
rename to datastream.js/datastream.js.d.ts