diff --git a/controller/python/controller.py b/controller/python/controller.py
index af426b0c3c11b655fb9883feab0f907edb962b25..dea0eeb029ab16930cdac665b02db9eb208ea18f 100644
--- a/controller/python/controller.py
+++ b/controller/python/controller.py
@@ -25,11 +25,11 @@ class Controller:
     RESET = 0xE0
     DEVICE_ID = 0xF0
 
-    def __init__(self, i2cbus=8):
+    def __init__(self, i2c_bus=8):
         import smbus
 
-        self.I2C_BUS = i2cbus
-        self.i2c = smbus.SMBus(self.I2C_BUS)
+        self.i2c_bus = i2c_bus
+        self.i2c = smbus.SMBus(self.i2c_bus)
 
         self.check_firmware_version()