diff --git a/src/server/h1.rs b/src/server/h1.rs
index e5cb04699..1eb2e525a 100644
--- a/src/server/h1.rs
+++ b/src/server/h1.rs
@@ -1396,6 +1396,7 @@ mod tests {
 
         let mut reader = Reader::new();
         let mut req = reader_parse_ready!(reader.parse(&mut buf, &mut readbuf, &settings));
+        let _ = req.payload_mut().set_read_buffer_capacity(0);
         assert!(req.chunked().unwrap());
         assert!(!req.payload().eof());