diff --git a/packages/angular-cli/models/webpack-build-test.js b/packages/angular-cli/models/webpack-build-test.js
index c23801c3c3f0..b0b2aae4bf63 100644
--- a/packages/angular-cli/models/webpack-build-test.js
+++ b/packages/angular-cli/models/webpack-build-test.js
@@ -79,7 +79,7 @@ const getWebpackTestConfig = function (projectRoot, environment, appConfig, test
                 tsconfig: path.resolve(appRoot, appConfig.tsconfig),
                 module: 'commonjs',
                 target: 'es5',
-                useForkChecker: true
+                forkChecker: true
               }
             },
             {
diff --git a/packages/angular-cli/models/webpack-build-typescript.ts b/packages/angular-cli/models/webpack-build-typescript.ts
index 0d9aaf810139..f1b511eca35a 100644
--- a/packages/angular-cli/models/webpack-build-typescript.ts
+++ b/packages/angular-cli/models/webpack-build-typescript.ts
@@ -30,7 +30,7 @@ export const getWebpackNonAotConfigPartial = function(projectRoot: string, appCo
           loaders: [{
             loader: 'awesome-typescript-loader',
             query: {
-              useForkChecker: true,
+              forkChecker: true,
               tsconfig: path.resolve(appRoot, appConfig.tsconfig)
             }
           }, {