diff --git a/simulator.py b/simulator.py
index 430b199a..96854eac 100644
--- a/simulator.py
+++ b/simulator.py
@@ -138,8 +138,10 @@ SENSOR_NAMES: dict[str, list[str]] = {
 def _gen_locs(stype: str, count: int) -> list[dict]:
     locs = []
     for i in range(count):
-        lat = BASE_LAT + random.uniform(-0.05, 0.05)
-        lon = BASE_LON + random.uniform(-0.05, 0.05)
+        # Coordonnées précises Martinique (terre ferme uniquement)
+        # Réduit à ±0.02 pour éviter la mer
+        lat = BASE_LAT + random.uniform(-0.02, 0.02)
+        lon = BASE_LON + random.uniform(-0.02, 0.02)
         names = SENSOR_NAMES.get(stype, [stype])
         locs.append({
             "lat":  round(lat, 6),