diff --git a/kismet_enrich_from_pcap.py b/kismet_enrich_from_pcap.py
index ca9fa03..80f69a7 100755
--- a/kismet_enrich_from_pcap.py
+++ b/kismet_enrich_from_pcap.py
@@ -122,7 +122,11 @@ def get_clients_on_channel(capture, ap_channel, ap_bssid):
             radio = packet.radiotap
             wlan = packet.wlan
 
-            packet_freq = int(getattr(radio, 'channel_freq', -1))
+            if not hasattr(radio, 'channel') or not hasattr(radio.channel, 'freq'):
+                continue
+
+            packet_freq = int(radio.channel.freq)
+
             packet_channel = get_channel_from_freq(packet_freq)
 
             if packet_channel != ap_channel: