diff --git a/library/ssl_client.c b/library/ssl_client.c
index 1ce7f13..d3f34df 100644
--- a/library/ssl_client.c
+++ b/library/ssl_client.c
@@ -418,6 +418,8 @@
     const mbedtls_ssl_ciphersuite_t *suite_info,
     int min_minor_ver, int max_minor_ver )
 {
+    (void) ssl;
+
     if( suite_info == NULL )
         return( -1 );