# must fail: object_length_trailing
# bytes after the envelope are accepted (head::parse_head)
diff --git a/wai/wai-rs/src/http_binding/head.rs b/wai/wai-rs/src/http_binding/head.rs
index 1470133d..b861cb16 100644
--- a/wai/wai-rs/src/http_binding/head.rs
+++ b/wai/wai-rs/src/http_binding/head.rs
@@ -101,7 +101,7 @@ pub fn parse_head(prefix: &[u8], envelope_len: u64) -> Result<HeadParse, RangeRe
         }
     };
     let total = head_len + components.iter().map(|c| c.len).sum::<u64>();
-    if total != envelope_len {
+    if total > envelope_len {
         return Err(RangeRefusal::ObjectLengthMismatch { expected: total, got: envelope_len });
     }
     let bytes = prefix[..head_len as usize].to_vec();