diff --git a/simulator.py b/simulator.py
index 3ac9c0db..dda3c895 100644
--- a/simulator.py
+++ b/simulator.py
@@ -58,7 +58,7 @@ OR_ADMIN_USER = os.environ.get("OR_ADMIN_USER", "admin")
 OR_ADMIN_PASS = os.environ.get("OR_ADMIN_PASS", "Digitribe972")
 OR_REALM     = os.environ.get("OR_REALM", "smartcity")
 OR_TOKEN_REALM = os.environ.get("OR_TOKEN_REALM", "master")  # Realm pour obtention token
-FROST_URL    = os.environ.get("FROST_URL", "http://localhost:8086/FROST-Server/v1.1")  # Exposer frost_http-web-1:8080 -> host:8086
+FROST_URL    = os.environ.get("FROST_URL", "http://localhost:8088/FROST-Server/v1.1")  # Exposer frost_http-web-1:8080 -> host:8086
 
 # InfluxDB config
 ENABLE_INFLUX  = os.environ.get("ENABLE_INFLUX", "1") == "1"
@@ -513,12 +513,8 @@ def publish_orion(sid: str, sensor: dict) -> bool:
     stype = sensor["type"]
     topic = f"city/sensors/{stype}/{sid}"
     entity = _ngsi_payload(sid, sensor, source="simulator", topic=topic)
-    if not hasattr(publish_orion, "orion_ip"):
-        try:
-            publish_orion.orion_ip = socket.gethostbyname("fiware-gis-quickstart-orion-1")
-        except Exception:
-            publish_orion.orion_ip = "192.168.192.20"
-    base = f"http://{publish_orion.orion_ip}:1026/ngsi-ld/v1"
+    # Orion-LD est exposé sur localhost:2026 (hôte)
+    base = "http://localhost:2026/ngsi-ld/v1"
     # 1. Essayer de créer (POST)
     try:
         body = json.dumps(entity).encode()