diff --git a/src/mss_python/client.py b/src/mss_python/client.py
index 1b59c1a..23cc85a 100644
--- a/src/mss_python/client.py
+++ b/src/mss_python/client.py
@@ -92,7 +92,7 @@ def refine_getHotelList(resp: dict) -> dict:
         return resp
     elif "hotel" not in resp["result"] or resp["result"]["hotel"] is None:
         return resp
-    elif resp["result"]["hotel"] is not list:
+    elif not isinstance(resp["result"]["hotel"], list):
         resp["result"]["hotel"] = [resp["result"]["hotel"]]
 
     for hotel in resp["result"]["hotel"]:
@@ -107,5 +107,5 @@ def refine_getHotelList(resp: dict) -> dict:
 def ensure_list_value(hotel: dict, parent_fld: str, child_fld: str) -> None:
     if parent_fld not in hotel:
         hotel[parent_fld] = {child_fld: []}
-    elif hotel[parent_fld][child_fld] is not list:
+    elif not isinstance(hotel[parent_fld][child_fld], list):
         hotel[parent_fld][child_fld] = [hotel[parent_fld][child_fld]]