diff --git a/main.py b/main.py
index 9aad40b..9017c91 100644
--- a/main.py
+++ b/main.py
@@ -180,37 +180,37 @@ def publish_discovery_messages(client):
     # ...
     print("publish_discovery_messages")
     client.publish(
-        f"{discovery_prefix}/switch/{shutdown_entity['name']}/config",
+        f"{discovery_prefix}/switch/{hostname}/{shutdown_entity['name']}/config",
         json.dumps(shutdown_entity),
         retain=True,
     )
 # Publication de la configuration du capteur cpu_temp
     client.publish(
-        f"{discovery_prefix}/sensor/{cpu_temp_entity['name']}/config",
+        f"{discovery_prefix}/sensor/{hostname}/{cpu_temp_entity['name']}/config",
         json.dumps(cpu_temp_entity),
         retain=True,
     )
 # Publication de la configuration du capteur gpu_temp
     client.publish(
-        f"{discovery_prefix}/sensor/{gpu_temp_entity['name']}/config",
+        f"{discovery_prefix}/sensor/{hostname}/{gpu_temp_entity['name']}/config",
         json.dumps(gpu_temp_entity),
         retain=True,
     )
 # Publication de la configuration du capteur memory_used
     client.publish(
-        f"{discovery_prefix}/sensor/{memory_used_entity['name']}/config",
+        f"{discovery_prefix}/sensor/{hostname}/{memory_used_entity['name']}/config",
         json.dumps(memory_used_entity),
         retain=True,
     )
 # Publication de la disponibilité pour l'entité cpu_usage
     client.publish(
-        f"{discovery_prefix}/sensor/{cpu_usage_entity['name']}/config",
+        f"{discovery_prefix}/sensor/{hostname}/{cpu_usage_entity['name']}/config",
         json.dumps(cpu_usage_entity),
         retain=True,
     )
     # Publication de la configuration du capteur gpu_memory_usage
     client.publish(
-        f"{discovery_prefix}/sensor/{gpu_memory_usage_entity['name']}/config",
+        f"{discovery_prefix}/sensor/{hostname}/{gpu_memory_usage_entity['name']}/config",
         json.dumps(gpu_memory_usage_entity),
         retain=True,
     )