diff --git a/hotspot_proxy_v2.py b/hotspot_proxy_v2.py
index 985f2c7..0bb0dbb 100644
--- a/hotspot_proxy_v2.py
+++ b/hotspot_proxy_v2.py
@@ -259,7 +259,7 @@ class API(NetstringReceiver):
         _dmrid = int(_dmrid)
         _dmrid = bytes_4(_dmrid)
         _options = _message[10:]
-        _cmd = _message[11:15]
+        _cmd = _message[10:14]
         
         if _cmd == b'RPTO' and (_dmrid in self.peerTrack):
             if self.debug: