diff --git a/listener.py b/listener.py
index c36cf29..2f7fa4b 100755
--- a/listener.py
+++ b/listener.py
@@ -115,7 +115,8 @@ def handle_packet(pkt):
                 # Track channel seen on
                 if pkt.haslayer(RadioTap) and hasattr(pkt[RadioTap], 'ChannelFrequency'):
                     # Nah, be lazy
-                    bssid_channels[a2] = current_channel
+                    if packet_channel:
+                        bssid_channels[a2] = packet_channel
 
     # === Track all seen clients ===
     if dot11.type == 2: