diff --git a/ix.js/ix.d.ts b/ix.js/ix.d.ts
index 5de2361dd..9ea0ae0c9 100644
--- a/ix.js/ix.d.ts
+++ b/ix.js/ix.d.ts
@@ -1,3 +1,7 @@
+// Type definitions for IxJS 1.0.6 / ix.js
+// Project: https://github.com/Reactive-Extensions/IxJS
+// Definitions by: Igor Oleinikov <https://github.com/Igorbek>
+
 ///<reference path="l2o.d.ts"/>
 
 declare module Ix {
diff --git a/ix.js/l2o.d.ts b/ix.js/l2o.d.ts
index 8177376e1..841116c46 100644
--- a/ix.js/l2o.d.ts
+++ b/ix.js/l2o.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for IxJS 1.0.6
+// Type definitions for IxJS 1.0.6 / l2o.js
 // Project: https://github.com/Reactive-Extensions/IxJS
 // Definitions by: Igor Oleinikov <https://github.com/Igorbek>