diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 0500d85..3cceb66 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1708,6 +1708,7 @@
         == MBEDTLS_KEY_EXCHANGE_ECDHE_RSA )
     {
         const struct uECC_Curve_t * uecc_curve = uECC_secp256r1();
+        ((void) ret);
 
         if( !uECC_shared_secret( ssl->handshake->ecdh_peerkey,
                                  ssl->handshake->ecdh_privkey,