diff --git a/dev/test_mb_2024_1_mux_2024.py b/dev/test_mb_2024_1_mux_2024.py
index 22e3f319c9800d6f1e4070c798ed130e45eb156b..acf5d4d4d27578ffc5814d9e61f47e89fcb6780a 100644
--- a/dev/test_mb_2024_1_mux_2024.py
+++ b/dev/test_mb_2024_1_mux_2024.py
@@ -42,9 +42,9 @@ if stand_alone:
     tx.polarity = 1
     time.sleep(1)
     tx.polarity = 0
-    mux.switch(elec_dict=[1,4,2,3], state='on')
+    mux.switch(elec_dict={'A':1, 'B':4, 'M':2, 'N':3}, state='on')
     time.sleep(1)
-    mux.switch(elec_dict=[1, 4, 2, 3], state='off')
+    mux.switch(elec_dict={'A':1, 'B':4, 'M':2, 'N':3}, state='off')
 
 # mux as part of a OhmPiHardware system
 if part_of_hardware_system: