diff --git a/pingora-http/src/lib.rs b/pingora-http/src/lib.rs
index d57998d17..90b71e439 100644
--- a/pingora-http/src/lib.rs
+++ b/pingora-http/src/lib.rs
@@ -651,7 +651,7 @@ mod tests {
         assert_eq!(buf, b"FoO: Bar\r\n");
 
         let mut resp = ResponseHeader::new(None);
-        req.insert_header("foo", "bar").unwrap();
+        resp.insert_header("foo", "bar").unwrap();
         resp.insert_header("FoO", "Bar").unwrap();
         let mut buf: Vec<u8> = vec![];
         resp.header_to_h1_wire(&mut buf);
@@ -668,7 +668,7 @@ mod tests {
         assert_eq!(buf, b"foo: Bar\r\n");
 
         let mut resp = ResponseHeader::new_no_case(None);
-        req.insert_header("foo", "bar").unwrap();
+        resp.insert_header("foo", "bar").unwrap();
         resp.insert_header("FoO", "Bar").unwrap();
         let mut buf: Vec<u8> = vec![];
         resp.header_to_h1_wire(&mut buf);