diff --git a/homeassistant/components/device_tracker/snmp.py b/homeassistant/components/device_tracker/snmp.py
index cbe70075665..1449ae6dbef 100644
--- a/homeassistant/components/device_tracker/snmp.py
+++ b/homeassistant/components/device_tracker/snmp.py
@@ -125,7 +125,10 @@ class SnmpScanner(DeviceScanner):
 
         for resrow in restable:
             for _, val in resrow:
-                mac = binascii.hexlify(val.asOctets()).decode('utf-8')
+                try:
+                    mac = binascii.hexlify(val.asOctets()).decode('utf-8')
+                except AttributeError:
+                    continue
                 _LOGGER.debug("Found MAC %s", mac)
                 mac = ':'.join([mac[i:i+2] for i in range(0, len(mac), 2)])
                 devices.append({'mac': mac})