diff --git a/src/urllib3/connectionpool.py b/src/urllib3/connectionpool.py
index 52bb8657fc..c952dcbebb 100644
--- a/src/urllib3/connectionpool.py
+++ b/src/urllib3/connectionpool.py
@@ -556,7 +556,7 @@ def _make_request(
             # HTTP version
             http_version,
             response.status,
-            response.length_remaining,  # type: ignore[attr-defined]
+            response.length_remaining,
         )
 
         return response
diff --git a/src/urllib3/response.py b/src/urllib3/response.py
index 6a811ad513..47e75fd171 100644
--- a/src/urllib3/response.py
+++ b/src/urllib3/response.py
@@ -344,6 +344,7 @@ def __init__(
             self.chunked = True
 
         self._decoder: ContentDecoder | None = None
+        self.length_remaining: int | None
 
     def get_redirect_location(self) -> str | None | Literal[False]:
         """