diff --git a/hblink.py b/hblink.py
index 626bde5..9a933e8 100755
--- a/hblink.py
+++ b/hblink.py
@@ -532,6 +532,7 @@ class OPENBRIDGE(DatagramProtocol):
 
 
             elif _packet[:4] == DMRF:
+                _stream_id = _data[16:20]
                 logger.warning('(%s) *ProtoControl* Protocols 2 and 3 are no longer supported',self._system)
                 if _stream_id not in self._laststrid:
                     self.send_bcsq(_dst_id,_stream_id)