diff --git a/ohmpi/utils.py b/ohmpi/utils.py
index 6b3d4eb1d7398c3868f8ca2464bdb2dcb4a789de..79f9c711ce187762a58be303902900fccc419d2a 100644
--- a/ohmpi/utils.py
+++ b/ohmpi/utils.py
@@ -264,7 +264,7 @@ HARDWARE_CONFIG = {
                          {'model': 'mux_2024_0_X',
                           'roles': ['A', 'B'],
                           'electrodes': range(1, 17),
-                          'addr1': 'down',
+                          'addr1': 'up',
                           'addr2': 'up',
                           'tca_address': None,
                           'tca_channel': 0,
@@ -273,8 +273,8 @@ HARDWARE_CONFIG = {
                          {'model': 'mux_2024_0_X',
                           'roles': ['M', 'N'],
                           'electrodes': range(1, 17),
-                          'addr1': 'up',
-                          'addr2': 'down',
+                          'addr1': 'down',
+                          'addr2': 'up',
                           'tca_address': None,
                           'tca_channel': 0,
                           },""",