diff --git a/src/judas_client/client.py b/src/judas_client/client.py
index 799dfa0..f7e41ea 100644
--- a/src/judas_client/client.py
+++ b/src/judas_client/client.py
@@ -31,17 +31,17 @@ class Client:
         self.server_port: int = server_port
 
         if "JUDAS_ID" in os.environ:
-            self.mac_address: str = os.environ["JUDAS_ID"]
+            self.id: str = os.environ["JUDAS_ID"]
             self.logger.debug(
-                f"Using MAC address from environment variable JUDAS_ID: {self.mac_address}"
+                f"Using ID from environment variable JUDAS_ID: {self.id}"
             )
         else:
-            self.mac_address = self._get_mac_address()
+            self.id = self._get_mac_address()
 
-        self.logger.debug(f"MAC address: {self.mac_address}")
+        self.logger.debug(f"ID: {self.id}")
 
         self.connector: Connector = Connector(
-            mac_address=self.mac_address,
+            mac_address=self.id,
             host=self.server_host,
             port=self.server_port,
             on_message=self.handle_message,
@@ -71,5 +71,5 @@ class Client:
 
     def run(self) -> None:
         """Run the client."""
-        self.logger.info(f"Starting Client ({self.mac_address})...")
+        self.logger.info(f"Starting Client ({self.id})...")
         self.connector.run()