diff --git a/dev/test_mb_2024_0_mux_2024.py b/dev/test_mb_2024_0_mux_2024.py
index 1c17b77f02263d3d671c14adef10a2f2090da2d2..54942874f0d8c4e1d8d05e03070232d5bf0f9c82 100644
--- a/dev/test_mb_2024_0_mux_2024.py
+++ b/dev/test_mb_2024_0_mux_2024.py
@@ -20,7 +20,7 @@ within_ohmpi = False
 if stand_alone:
     HARDWARE_CONFIG['tx'].update({'ctl': HARDWARE_CONFIG['tx'].pop('ctl', ctl_module.Ctl)})
     HARDWARE_CONFIG['rx'].update({'ctl': HARDWARE_CONFIG['rx'].pop('ctl', ctl_module.Ctl)})
-    print(f'rx controller: {HARDWARE_CONFIG['rx']['ctl']}')
+    print(f'rx controller: {HARDWARE_CONFIG["rx"]["ctl"]}')
     HARDWARE_CONFIG['tx'].update({'connection': HARDWARE_CONFIG['tx'].pop('connection',
                                                                           HARDWARE_CONFIG['rx']['ctl'].interfaces[
                                                                               HARDWARE_CONFIG['tx'].pop(