diff --git a/src/internal.c b/src/internal.c
index 97e126b45..4b4e8449c 100644
--- a/src/internal.c
+++ b/src/internal.c
@@ -37172,6 +37172,8 @@ static int DoSessionTicket(WOLFSSL* ssl, const byte* input, word32* inOutIdx,
      */
     static WC_INLINE int IsTls13CipherSuite(byte first, byte second)
     {
+        (void)second;  /* Suppress unused parameter warning */
+        
         /* TLS 1.3 cipher suites use TLS13_BYTE (0x13) as first byte */
         if (first == TLS13_BYTE)
             return 1;