diff --git a/bulletin-board-server-frontend/generate-protobuf.js b/bulletin-board-server-frontend/generate-protobuf.js
index eeb255e..57332d8 100755
--- a/bulletin-board-server-frontend/generate-protobuf.js
+++ b/bulletin-board-server-frontend/generate-protobuf.js
@@ -1,15 +1,26 @@
 #!/usr/bin/env node
 const { execFileSync } = require('child_process');
+const  path  = require('path');
+
+const isWin = (process.platform === 'win32');
 
 const bundlejs = 'src/app/bundle.js'
 const bundlets = 'src/app/bundle.d.ts'
 
+const npm = isWin ? 'npm.cmd' : 'npm';
+
+
+var args = process.argv.slice(2).map(function(x) {
+  return path.normalize(x);
+});
+
+
 var pbjs_args = [
   '-t', 'static-module', '-w', 'commonjs', '-o', bundlejs
-].concat(process.argv.slice(2));
+].concat(args);
 
 console.log("Running pbjs " + pbjs_args.join(" "));
-var out = execFileSync('pbjs', pbjs_args);
+var out = execFileSync(npm, ['run', 'pbjs', '--'].concat(pbjs_args));
 console.log("" + out);
 
 var pbts_args = [
@@ -17,5 +28,5 @@ var pbts_args = [
 ];
 
 console.log("Running pbts " + pbts_args.join(" "));
-out = execFileSync('pbts', pbts_args);
+out = execFileSync(npm, ['run', 'pbts', '--'].concat(pbts_args));
 console.log("" + out);
diff --git a/bulletin-board-server-frontend/package.json b/bulletin-board-server-frontend/package.json
index 58d7e8a..8388fa4 100644
--- a/bulletin-board-server-frontend/package.json
+++ b/bulletin-board-server-frontend/package.json
@@ -10,7 +10,7 @@
     "lint": "ng e2e",
     "pbts": "pbts",
     "pbjs": "pbjs",
-    "protoc" : "./generate-protobuf.js"
+    "protoc" : "node ./generate-protobuf.js"
   },
   "private": true,
   "dependencies": {