mbedtls_ssl_conf_arc4_support() depends on ARC4_C
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 5d04497..62c520d 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -969,12 +969,14 @@
         return( 0 );
 #endif
 
+#if defined(MBEDTLS_ARC4_C)
     if( ssl->conf->arc4_disabled == MBEDTLS_SSL_ARC4_DISABLED &&
             suite_info->cipher == MBEDTLS_CIPHER_ARC4_128 )
     {
         MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite mismatch: rc4" ) );
         return( 0 );
     }
+#endif
 
 #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C)
     if( mbedtls_ssl_ciphersuite_uses_ec( suite_info ) &&