Index: src/SSLSocket.m
==================================================================
--- src/SSLSocket.m
+++ src/SSLSocket.m
@@ -113,18 +113,22 @@
 
 	if (self != [SSLSocket class])
 		return;
 
 	CRYPTO_set_id_callback(&get_thread_id);
+	/* OpenSSL >= 1.1 defines the line above to a nop */
+	(void)get_thread_id;
 
 	/* Generate number of mutexes needed */
 	m = CRYPTO_num_locks();
 	ssl_mutexes = malloc(m * sizeof(of_mutex_t));
 	for (m--; m >= 0; m--)
 		of_mutex_new(&ssl_mutexes[m]);
 
 	CRYPTO_set_locking_callback(&locking_callback);
+	/* OpenSSL >= 1.1 defines the line above to a nop */
+	(void)locking_callback;
 
 	SSL_library_init();
 
 	if ((ctx = SSL_CTX_new(SSLv23_method())) == NULL)
 		@throw [OFInitializationFailedException