diff --git a/hardware_components/mux_2024_rev_0_0.py b/hardware_components/mux_2024_rev_0_0.py
index 1a493ba7d38142608015fb454a04261f9fa504e7..dbeb4685e10657649c318c67b12655f9e435acd4 100644
--- a/hardware_components/mux_2024_rev_0_0.py
+++ b/hardware_components/mux_2024_rev_0_0.py
@@ -7,7 +7,7 @@ from adafruit_mcp230xx.mcp23017 import MCP23017  # noqa
 from digitalio import Direction  # noqa
 
 MUX_CONFIG = HARDWARE_CONFIG['mux']
-MUX_CONFIG['default_mux_cabling': {(i, j) : ('mux_1', i) for j in ['A', 'B', 'M', 'N'] for i in range(1,9)}] # 4 roles cabling electrodes from 1 to 8
+MUX_CONFIG['default_mux_cabling'] = {(i, j) : ('mux_1', i) for j in ['A', 'B', 'M', 'N'] for i in range(1,9)} # 4 roles cabling electrodes from 1 to 8
 
 inner_cabling ={'4_roles' : {(1, 'X'): {'MCP': 0, 'MCP_GPIO': 0},
                  (2, 'X'): {'MCP': 0, 'MCP_GPIO': 1},