diff --git a/src/socket/tcp.rs b/src/socket/tcp.rs
index f884cd78d..1a2eec54c 100644
--- a/src/socket/tcp.rs
+++ b/src/socket/tcp.rs
@@ -3072,7 +3072,7 @@ mod test {
                     ack_number: Some(REMOTE_SEQ + 1),
                     max_seg_size: Some(BASE_MSS),
                     window_scale: Some(*shift_amt),
-                    window_len: cmp::min(*buffer_size, 65535) as u16,
+                    window_len: u16::try_from(*buffer_size).unwrap_or(u16::MAX),
                     ..RECV_TEMPL
                 }]
             );
@@ -3750,7 +3750,7 @@ mod test {
                     ack_number: None,
                     max_seg_size: Some(BASE_MSS),
                     window_scale: Some(*shift_amt),
-                    window_len: cmp::min(*buffer_size, 65535) as u16,
+                    window_len: u16::try_from(*buffer_size).unwrap_or(u16::MAX),
                     sack_permitted: true,
                     ..RECV_TEMPL
                 }]