diff --git a/listener.py b/listener.py
index 90612df..b770f6b 100755
--- a/listener.py
+++ b/listener.py
@@ -73,7 +73,10 @@ def handle_packet(pkt):
 
     dot11 = pkt[Dot11]
     a1 = dot11.addr1.lower()
-    a2 = dot11.addr2.lower()
+    try:
+        a2 = dot11.addr2.lower()
+    except:
+        a2 = None
 
     # === Detect APs via beacons/probe responses ===
     if dot11.type == 0 and dot11.subtype in (5, 8):  # Probe Response or Beacon