diff --git a/src/pipe.rs b/src/pipe.rs
index 60cdd73..c5b3e70 100644
--- a/src/pipe.rs
+++ b/src/pipe.rs
@@ -57,6 +57,7 @@ where
     outbox: Option<RawPacket>,
 
     ext_packet: ExtPacket,
+    #[allow(dead_code)]
     packet_len: usize,
     receiving_long: bool,
     long_packet_missing: usize,