diff --git a/scense_runtime/runtime_service.py b/scense_runtime/runtime_service.py
index fdac45d..acf2ea2 100644
--- a/scense_runtime/runtime_service.py
+++ b/scense_runtime/runtime_service.py
@@ -94,7 +94,7 @@ async def load_world_runtime(world_id):
         return {'ok': False, 'message': 'world_id is required', 'data': None}
     try:
         from sqlor.dbpools import DBPools
-        from ahserver import ServerEnv
+        from ahserver.serverenv import ServerEnv
     except Exception as exc:
         return _degraded(world_id, 'backend import unavailable: ' + str(exc))