diff --git a/tnc/data_handler.py b/tnc/data_handler.py
index 54e9233d..6ba90080 100644
--- a/tnc/data_handler.py
+++ b/tnc/data_handler.py
@@ -2239,6 +2239,7 @@ class DATA:
                 received=protocol_version,
                 own=static.ARQ_PROTOCOL_VERSION,
             )
+            self.stop_transmission()
             self.arq_cleanup()
 
     # ---------- PING