diff --git a/libsofia-sip-ua/tport/tport_tls.c b/libsofia-sip-ua/tport/tport_tls.c
index 4510afad8..850dc9cf9 100644
--- a/libsofia-sip-ua/tport/tport_tls.c
+++ b/libsofia-sip-ua/tport/tport_tls.c
@@ -44,6 +44,7 @@
 
 #include <openssl/lhash.h>
 #include <openssl/bn.h>
+#include <openssl/dh.h>
 #include <openssl/x509.h>
 #include <openssl/x509v3.h>
 #include <openssl/ssl.h>
@@ -95,8 +96,10 @@ static int tls_ex_data_idx = -1; /* see SSL_get_ex_new_index(3ssl) */
 static void
 tls_init_once(void)
 {
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
   SSL_library_init();
   SSL_load_error_strings();
+#endif
   tls_ex_data_idx = SSL_get_ex_new_index(0, "sofia-sip private data", NULL, NULL, NULL);
 }
 
diff --git a/libsofia-sip-ua/tport/ws.c b/libsofia-sip-ua/tport/ws.c
index 67f407c81..fb0d6299f 100644
--- a/libsofia-sip-ua/tport/ws.c
+++ b/libsofia-sip-ua/tport/ws.c
@@ -100,11 +100,13 @@ static void pthreads_thread_id(CRYPTO_THREADID *id)
 
 
 void init_ssl(void) {
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
 	SSL_library_init();
 
 
 	OpenSSL_add_all_algorithms();   /* load & register cryptos */
 	SSL_load_error_strings();     /* load all error messages */
+#endif
 	ws_globals.ssl_method = SSLv23_server_method();   /* create server instance */
 	ws_globals.ssl_ctx = SSL_CTX_new(ws_globals.ssl_method);         /* create context */
 	assert(ws_globals.ssl_ctx);