diff --git a/adafruit_wiznet5k/adafruit_wiznet5k.py b/adafruit_wiznet5k/adafruit_wiznet5k.py
index b2771ef..ddf798a 100644
--- a/adafruit_wiznet5k/adafruit_wiznet5k.py
+++ b/adafruit_wiznet5k/adafruit_wiznet5k.py
@@ -386,7 +386,7 @@ def mac_address(self, address: Union[MacAddressRaw, str]) -> None:
         """
         try:
             address = [int(x, 16) for x in address.split(":")]
-        except AttributeError:
+        except TypeError:
             pass
         try:
             if len(address) != 6: