diff --git a/tools/import_sanef_assets.py b/tools/import_sanef_assets.py
index 335dd03..38cbde9 100644
--- a/tools/import_sanef_assets.py
+++ b/tools/import_sanef_assets.py
@@ -58,16 +58,22 @@ def main():
 
     with engine.begin() as conn:
         if args.truncate:
-            print("[INFO] Nettoyage des tables dépendantes + TRUNCATE servers")
+            print("[INFO] Nettoyage des tables référençant servers")
             if not args.dry_run:
-                for tbl in ("server_ips", "qualys_assets", "audits",
-                            "session_servers", "planning_sessions",
-                            "patch_history", "ref_correspondance"):
-                    try:
-                        conn.execute(text(f"DELETE FROM {tbl}"))
-                    except Exception as e:
-                        print(f"  [WARN] DELETE {tbl}: {e}")
+                fk_tables = conn.execute(text("""
+                    SELECT DISTINCT tc.table_name
+                    FROM information_schema.table_constraints tc
+                    JOIN information_schema.constraint_column_usage ccu
+                      ON tc.constraint_name = ccu.constraint_name
+                    WHERE tc.constraint_type = 'FOREIGN KEY'
+                      AND ccu.table_name = 'servers'
+                      AND tc.table_name != 'servers'
+                """)).fetchall()
+                for (tbl,) in fk_tables:
+                    conn.execute(text(f"DELETE FROM {tbl}"))
+                    print(f"  [OK] cleared {tbl}")
                 conn.execute(text("TRUNCATE servers RESTART IDENTITY CASCADE"))
+                print("  [OK] servers truncated")
 
         inserted = 0
         skipped = 0