diff --git a/hardware_system.py b/hardware_system.py
index 639eb9adb1570244dd99ab1cadeffecf775af84c..4db8e0af12938b6c7b008159877fd9006750e1d0 100644
--- a/hardware_system.py
+++ b/hardware_system.py
@@ -66,8 +66,8 @@ class OhmPiHardware:
         self._cabling={}
         for _, mux in self.mux_boards.items():
             mux.barrier = self.mux_barrier
-            print(mux.cabling)
-            update_dict(self._cabling, mux.cabling)
+            for k, v in mux.cabling.items:
+                update_dict(self._cabling, (mux_id, k[0]))
         print(self._cabling)
         self.readings = np.array([])  # time series of acquired data
         self._start_time = None  # time of the beginning of a readings acquisition