diff --git a/uvicorn/protocols/http/h11_impl.py b/uvicorn/protocols/http/h11_impl.py
index d0b202e3a..044b503dd 100644
--- a/uvicorn/protocols/http/h11_impl.py
+++ b/uvicorn/protocols/http/h11_impl.py
@@ -205,9 +205,9 @@ def handle_events(self) -> None:
         while True:
             try:
                 event = self.conn.next_event()
-            except h11.RemoteProtocolError:
+            except h11.RemoteProtocolError as exc:
                 msg = "Invalid HTTP request received."
-                self.logger.warning(msg)
+                self.logger.warning(msg, exc_info=exc)
                 self.send_400_response(msg)
                 return
             event_type = type(event)