diff --git a/ohmpi/hardware_components/mux_2023_0_X.py b/ohmpi/hardware_components/mux_2023_0_X.py
index 140ab1805265f70a6f328c45def2908d41273e55..e0033c1b8b16cd098703820a9168ed2da9945fc1 100644
--- a/ohmpi/hardware_components/mux_2023_0_X.py
+++ b/ohmpi/hardware_components/mux_2023_0_X.py
@@ -68,7 +68,7 @@ class Mux(MuxAbstract):
         kwargs.update({'cabling': kwargs.pop('cabling', default_mux_cabling)})
         super().__init__(**kwargs)
         if not subclass_init:
-            self.exec_logger.event(f'{self.model}{self.board_id}\tmux_init\tbegin\t{datetime.datetime.utcnow()}')
+            self.exec_logger.event(f'{self.model}: {self.board_id}\tmux_init\tbegin\t{datetime.datetime.utcnow()}')
         assert isinstance(self.connection, I2C)
         self.exec_logger.debug(f'configuration: {kwargs}')
         self._roles = kwargs.pop('roles', None)
@@ -87,7 +87,7 @@ class Mux(MuxAbstract):
             self._get_addresses()
         self.exec_logger.debug(f'{self.board_id} addresses: {self.addresses}')
         if not subclass_init:
-            self.exec_logger.event(f'{self.model}_{self.board_id}\tmux_init\tend\t{datetime.datetime.utcnow()}')
+            self.exec_logger.event(f'{self.model}: {self.board_id}\tmux_init\tend\t{datetime.datetime.utcnow()}')
 
     def _get_addresses(self):
         """ Converts inner cabling addressing into (electrodes, role) addressing """
diff --git a/ohmpi/hardware_components/mux_2024_0_X.py b/ohmpi/hardware_components/mux_2024_0_X.py
index decd5461c1151d72c233b955a4d272c2e35897b0..db16f57b43e1be3afbe29dfe5292c62b2a0143b7 100644
--- a/ohmpi/hardware_components/mux_2024_0_X.py
+++ b/ohmpi/hardware_components/mux_2024_0_X.py
@@ -66,7 +66,7 @@ class Mux(MuxAbstract):
             subclass_init = True
         super().__init__(**kwargs)
         if not subclass_init:
-            self.exec_logger.event(f'{self.model}{self.board_id}\tmux_init\tbegin\t{datetime.datetime.utcnow()}')
+            self.exec_logger.event(f'{self.model}: {self.board_id}\tmux_init\tbegin\t{datetime.datetime.utcnow()}')
         assert isinstance(self.connection, I2C)
         self.exec_logger.debug(f'configuration: {kwargs}')
         self._roles = kwargs.pop('roles', None)
@@ -97,7 +97,7 @@ class Mux(MuxAbstract):
 
         self.exec_logger.debug(f'{self.board_id} addresses: {self.addresses}')
         if not subclass_init:  # TODO: try to only log this event and not the one created by super()
-            self.exec_logger.event(f'{self.model}_{self.board_id}\tmux_init\tend\t{datetime.datetime.utcnow()}')
+            self.exec_logger.event(f'{self.model}: {self.board_id}\tmux_init\tend\t{datetime.datetime.utcnow()}')
 
     def _get_addresses(self):
         """ Converts inner cabling addressing into (electrodes, role) addressing """