diff --git a/scripts/autoserve.py b/scripts/autoserve.py
index 824a26c..ab6f149 100644
--- a/scripts/autoserve.py
+++ b/scripts/autoserve.py
@@ -70,6 +70,11 @@ class Server(http.server.SimpleHTTPRequestHandler):
                 self.end_headers()
                 return
 
+        if not os.path.exists(path.strip('/')):
+            self.send_response(404)
+            self.end_headers()
+            return
+
         # send 200 response
         self.send_response(200)
         # send response headers