diff --git a/fastapi/dependencies/utils.py b/fastapi/dependencies/utils.py
index 2c98fd7f31..03a42418d4 100644
--- a/fastapi/dependencies/utils.py
+++ b/fastapi/dependencies/utils.py
@@ -215,7 +215,8 @@ def preserve_path_params_order(dependant: Dependant) -> Callable[[ModelField], i
             path_params_ordered.append(elem[1:-1])
 
     def key(param: ModelField) -> int:
-        return path_params_ordered.index(param.name)
+        # Use param.alias to cover both alias and name
+        return path_params_ordered.index(param.alias)
 
     return key