diff --git a/package.json b/package.json
index 1321b64d..4351dd86 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "watch": "tsc -w -p tsconfig.json",
     "test": "npm run build && jasmine src/**/*_spec.js",
     "prepare": "npm run build",
-    "postinstall": "[ ! -f scripts/postinstall.js ] || node scripts/postinstall.js",
+    "postinstall": "node scripts/postinstall.js",
     "debug": "node --debug-brk ./node_modules/@angular/cli/bin/ng g command",
     "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s",
     "reset.changelog": "conventional-changelog -p angular -i CHANGELOG.md -s -r 0"
diff --git a/scripts/postinstall.ts b/scripts/postinstall.ts
index 48d41d20..858530b1 100644
--- a/scripts/postinstall.ts
+++ b/scripts/postinstall.ts
@@ -8,7 +8,7 @@ const fsReadFile = promisify(fs.readFile);
 
 export async function updateConfig() {
   const cwd = process.cwd();
-  if (cwd.indexOf('node_modules/@nstudio/schematics') === -1) {
+  if (cwd.indexOf('node_modules/@nstudio/schematics') === -1 && cwd.indexOf('node_modules\\@nstudio\\schematics') === -1) {
     // ignore: local development
     return;
   }