diff --git a/crates/shadowsocks/src/relay/tcprelay/aead_2022.rs b/crates/shadowsocks/src/relay/tcprelay/aead_2022.rs
index 21622b926cb7..7be2b3361316 100644
--- a/crates/shadowsocks/src/relay/tcprelay/aead_2022.rs
+++ b/crates/shadowsocks/src/relay/tcprelay/aead_2022.rs
@@ -102,7 +102,7 @@ pub enum ProtocolError {
     DecryptLengthError,
     #[error("invalid stream type, expecting {0:#x}, but found {1:#x}")]
     InvalidStreamType(u8, u8),
-    #[error("invalid timestamp {0} - now {1} = {}", *.0 as i64 - *.1 as i64)]
+    #[error("invalid timestamp {0} - now {1} = {ts_diff}", ts_diff = *.0 as i64 - *.1 as i64)]
     InvalidTimestamp(u64, u64),
 }