diff --git a/bentoml/_internal/utils/formparser.py b/bentoml/_internal/utils/formparser.py
index 019a1b01fbf..98441225851 100644
--- a/bentoml/_internal/utils/formparser.py
+++ b/bentoml/_internal/utils/formparser.py
@@ -200,6 +200,10 @@ async def populate_multipart_requests(request: Request) -> t.Dict[str, Request]:
         req._form = FormData([(field_name, data)])  # type: ignore (using internal starlette APIs)
         if isinstance(data, bytes):
             req._body = data
+        else:
+            req._receive = (  # type: ignore (using internal starlette APIs)
+                data.read()  # formatted to preserve type checking
+            )
         reqs[field_name] = req
     return reqs