diff --git a/ohmpi/hardware_components/mux_2024_rev_0_0.py b/ohmpi/hardware_components/mux_2024_rev_0_0.py
index 10391b52c2ab4ac51dd509e81226081f621de8f3..a5dd69c6cbf13b84d8b518fc283a17ca35a2d750 100644
--- a/ohmpi/hardware_components/mux_2024_rev_0_0.py
+++ b/ohmpi/hardware_components/mux_2024_rev_0_0.py
@@ -14,11 +14,11 @@ activation_delay = 0.01
 release_delay = 0.005
 
 MUX_CONFIG = HARDWARE_CONFIG['mux'].pop('default', {})
-MUX_CONFIG.update({'voltage_max': max(0.,min(MUX_CONFIG['voltage_max'],voltage_max)),
-                   'current_max': max(0.,min(MUX_CONFIG['current_max'],voltage_max))})
+MUX_CONFIG.update({'voltage_max': max(0.,min(MUX_CONFIG.pop('voltage_max', voltage_max), voltage_max)),
+                   'current_max': max(0.,min(MUX_CONFIG.pop('current_max', voltage_max), voltage_max))})
 
-MUX_CONFIG.update({'activation_delay': max(MUX_CONFIG.pop('activation_delay', activation_delay),activation_delay),
-                   'release_delay': max(MUX_CONFIG.pop('release_delay', release_delay),release_delay)})
+MUX_CONFIG.update({'activation_delay': max(MUX_CONFIG.pop('activation_delay', activation_delay), activation_delay),
+                   'release_delay': max(MUX_CONFIG.pop('release_delay', release_delay), release_delay)})
 
 # defaults to 4 roles cabling electrodes from 1 to 8
 default_mux_cabling = {(elec, role) : ('mux_1', elec) for role in ['A', 'B', 'M', 'N'] for elec in range(1,9)}