diff --git a/app/services/server_service.py b/app/services/server_service.py
index 2b0c99f..fa33555 100644
--- a/app/services/server_service.py
+++ b/app/services/server_service.py
@@ -125,11 +125,17 @@ def list_servers(db, filters, page=1, per_page=50, sort="hostname", sort_dir="as
     if filters.get("os"):
         where.append("s.os_family = :os"); params["os"] = filters["os"]
     if filters.get("zone"):
-        if filters["zone"] == "__null__":
+        z = filters["zone"]
+        if z == "__null__":
             where.append("s.zone_id IS NULL")
+        elif z.lower() == "lan":
+            # 'LAN' = default affichage des serveurs sans zone définie
+            #         OU rattachés à une vraie zone nommée 'LAN' en BD
+            where.append("(s.zone_id IS NULL OR s.zone_id IN "
+                         "(SELECT id FROM zones WHERE LOWER(name)='lan'))")
         else:
-            where.append("s.zone_id = (SELECT id FROM zones WHERE name=:zone LIMIT 1)")
-            params["zone"] = filters["zone"]
+            where.append("s.zone_id IN (SELECT id FROM zones WHERE LOWER(name)=LOWER(:zone))")
+            params["zone"] = z
     if filters.get("owner"):
         where.append("s.patch_os_owner = :owner"); params["owner"] = filters["owner"]
     if filters.get("licence"):