diff --git a/fastapi/dependencies/utils.py b/fastapi/dependencies/utils.py
index c80737fbc..fa7a1c87c 100644
--- a/fastapi/dependencies/utils.py
+++ b/fastapi/dependencies/utils.py
@@ -252,6 +252,10 @@ def get_typed_signature(call: Callable[..., Any]) -> inspect.Signature:
         query_extra_info = dict()
         for param in fields:
             query_extra_info[param] = dict(fields[param].field_info.__repr_args__())
+            if "alias" in query_extra_info[param]:
+                query_extra_info[query_extra_info[param]["alias"]] = dict(
+                    fields[param].field_info.__repr_args__()
+                )
             query_extra_info[param]["default"] = (
                 Required
                 if getattr(fields[param], "required", False)