diff --git a/app.py b/app.py
index 79ea9ae..a9b5b23 100644
--- a/app.py
+++ b/app.py
@@ -77,8 +77,10 @@ class AppLauncher:
     def check_npm_installed(self):
         """Check if npm is installed"""
         try:
+            # Use npm.cmd on Windows, npm on Unix
+            npm_cmd = 'npm.cmd' if self.is_windows else 'npm'
             result = subprocess.run(
-                ['npm', '--version'],
+                [npm_cmd, '--version'],
                 capture_output=True,
                 text=True,
                 check=True