diff --git a/configs/config_mb_2023_mux_2024.py b/configs/config_mb_2023_mux_2024.py
index 5efb43ad5f0468f2d5a4b4d89af0dd0e2953e3be..f8075ecd87b2ed79981f0538f03520aebbe69194 100644
--- a/configs/config_mb_2023_mux_2024.py
+++ b/configs/config_mb_2023_mux_2024.py
@@ -27,7 +27,7 @@ HARDWARE_CONFIG = {
              'current_max': 4800 / 50 / 2,  # Maximum current supported by the TX board [mA]
              'r_shunt': 2  # Shunt resistance in Ohms
             },
-    'rx' : {'model': 'ohmpi_card_3_15',
+    'rx': {'model': 'ohmpi_card_3_15',
              'coef_p2': 2.50,  # slope for current conversion for ADS.P2, measurement in V/V
              'sampling_rate': 100.,  # Hz
              'nb_samples': 20,  # Max value 10 # was named integer before...
diff --git a/dev/test_4_mux_2024.py b/dev/test_4_mux_2024.py
index 2d4b36ef455b13028910bf87dd06cb1a48838dbf..6eba36a7958112c7fdbad8d58fb0248550049249 100644
--- a/dev/test_4_mux_2024.py
+++ b/dev/test_4_mux_2024.py
@@ -16,7 +16,8 @@ within_ohmpi = False
 if stand_alone_mux:
     mux_id = 'mux_02'
     print(MUX_CONFIG)
-    MUX_CONFIG.update({mux_id: HARDWARE_CONFIG['mux']['boards'][mux_id]})
+    MUX_CONFIG.update(HARDWARE_CONFIG['mux']['boards'][mux_id])
+    MUX_CONFIG.update('id', mux_id)
     MUX_CONFIG['ctl'] = ctl_module.Ctl()
     mux = Mux(**MUX_CONFIG)
     mux.switch_one(elec=1, role='M', state='on')