diff --git a/sanic/http.py b/sanic/http.py
index 80301aff..a594e60c 100644
--- a/sanic/http.py
+++ b/sanic/http.py
@@ -490,6 +490,9 @@ class Http:
 
             if size <= 0:
                 self.request_body = None
+                # Because we are leaving one CRLF in the buffer, we manually
+                # reset the buffer here
+                self.recv_buffer = bytearray()
 
                 if size < 0:
                     self.keep_alive = False