diff --git a/modules/angular2/platform/testing/browser.ts b/modules/angular2/platform/testing/browser.ts
index d344afb44c..5fa0032c70 100644
--- a/modules/angular2/platform/testing/browser.ts
+++ b/modules/angular2/platform/testing/browser.ts
@@ -12,7 +12,7 @@ import {CONST_EXPR} from 'angular2/src/facade/lang';
 export {CACHED_TEMPLATE_PROVIDER} from 'angular2/platform/browser';
 
 /**
- * Default patform providers for testing.
+ * Default platform providers for testing.
  */
 export const TEST_BROWSER_PLATFORM_PROVIDERS: Array<any /*Type | Provider | any[]*/> =
     CONST_EXPR([TEST_BROWSER_STATIC_PLATFORM_PROVIDERS]);
diff --git a/modules/angular2/platform/testing/browser_static.ts b/modules/angular2/platform/testing/browser_static.ts
index 92a4698464..c176bd98c3 100644
--- a/modules/angular2/platform/testing/browser_static.ts
+++ b/modules/angular2/platform/testing/browser_static.ts
@@ -36,7 +36,7 @@ function initBrowserTests() {
 }
 
 /**
- * Default patform providers for testing without a compiler.
+ * Default platform providers for testing without a compiler.
  */
 export const TEST_BROWSER_STATIC_PLATFORM_PROVIDERS: Array<any /*Type | Provider | any[]*/> =
     CONST_EXPR([
diff --git a/modules/angular2/platform/testing/server.ts b/modules/angular2/platform/testing/server.ts
index b2509a615f..7e78718a0b 100644
--- a/modules/angular2/platform/testing/server.ts
+++ b/modules/angular2/platform/testing/server.ts
@@ -47,7 +47,7 @@ function initServerTests() {
 }
 
 /**
- * Default patform providers for testing.
+ * Default platform providers for testing.
  */
 export const TEST_SERVER_PLATFORM_PROVIDERS: Array<any /*Type | Provider | any[]*/> = CONST_EXPR([
   PLATFORM_COMMON_PROVIDERS,