diff --git a/hardware_system.py b/hardware_system.py
index f61ce1f04a45c96aa03ee007c8f298e97e9b2035..568057ff7ce291e3bd7c67fa5756c8c74bee3af9 100644
--- a/hardware_system.py
+++ b/hardware_system.py
@@ -29,8 +29,7 @@ voltage_min = RX_CONFIG['voltage_min']
 
 default_mux_cabling = {}
 for mux in mux_boards:
-    if 'default_mux_cabling' in MUX_CONFIG[mux]:
-        update_dict(default_mux_cabling, MUX_CONFIG[mux].pop('default_mux_cabling', None))
+   update_dict(default_mux_cabling, MUX_CONFIG[mux].pop('default_mux_cabling', None))
 
 print(f'default_mux_cabling: {default_mux_cabling}')