diff -Naur a/ccast/ccpacket.c b/ccast/ccpacket.c
--- a/ccast/ccpacket.c	1970-01-01 05:00:00.000000000 +0500
+++ b/ccast/ccpacket.c	2018-03-04 22:19:02.913121849 +0500
@@ -156,6 +156,7 @@
 #ifdef USING_AXTLS
 	if ((p->ctx = ssl_ctx_new(SSL_SERVER_VERIFY_LATER, 1)) == NULL)
-#else
-	// Want to use TLS_client_method(), but older OpenSSL doesn't have it...
+#elif OPENSSL_VERSION_NUMBER < 0x10100000L
 	if ((p->ctx = SSL_CTX_new(TLSv1_client_method())) == NULL)
+#else
+	if ((p->ctx = SSL_CTX_new(TLS_client_method())) == NULL)
 #endif
@@ -584,8 +584,10 @@
 	ccpacket *p = NULL;
 
-#ifndef USING_AXTLS
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
 	SSL_load_error_strings();
 	SSL_library_init();
+#elif !defined USING_AXTLS
+	OPENSSL_init_ssl(0, NULL);
 #endif
 
 	if ((p = (ccpacket *)calloc(1, sizeof(ccpacket))) == NULL) {