diff --git a/modules/angular2/src/core/di/binding.ts b/modules/angular2/src/core/di/binding.ts
index b404406eb5..6202767ef7 100644
--- a/modules/angular2/src/core/di/binding.ts
+++ b/modules/angular2/src/core/di/binding.ts
@@ -117,7 +117,7 @@ export class Binding {
    *
    * ## Example
    *
-   * Becuse `toAlias` and `toClass` are often confused the example contains both use cases for easy
+   * Because `toAlias` and `toClass` are often confused the example contains both use cases for easy
    * comparison.
    *
    * ```javascript