diff --git a/adafruit_wiznet5k/adafruit_wiznet5k.py b/adafruit_wiznet5k/adafruit_wiznet5k.py
index c6497b5..046900d 100644
--- a/adafruit_wiznet5k/adafruit_wiznet5k.py
+++ b/adafruit_wiznet5k/adafruit_wiznet5k.py
@@ -213,7 +213,9 @@ def __init__(
         """
         self._debug = debug
         self._chip_type = None
-        self._device = SPIDevice(spi_bus, cs, baudrate=spi_baudrate, polarity=0, phase=0)
+        self._device = SPIDevice(
+            spi_bus, cs, baudrate=spi_baudrate, polarity=0, phase=0
+        )
         # init c.s.
         self._cs = cs