diff --git a/packages/@angular/cli/tasks/eject.ts b/packages/@angular/cli/tasks/eject.ts
index 8be7ae7a3f0b..f2766fcdd345 100644
--- a/packages/@angular/cli/tasks/eject.ts
+++ b/packages/@angular/cli/tasks/eject.ts
@@ -287,7 +287,7 @@ class JsonWebpackSerializer {
         return v;
       } else if (typeof v == 'string') {
         if (v === path.join(this._root, 'node_modules')) {
-          return this._serializeRegExp(/\/node_modules\//);
+          return this._serializeRegExp(/(\\|\/)node_modules(\\|\/)/);
         }
         return this._relativePath('process.cwd()', path.relative(this._root, v));
       } else {