diff --git a/src/socket.c b/src/socket.c
index 8b19396..6ab3ce4 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -39,8 +39,11 @@
 #ifdef HAVE_LIBSSL
 # include <openssl/ssl.h>
 # include <openssl/err.h>
-# include <openssl/hmac.h>
 # include <openssl/x509v3.h>
+# if OPENSSL_VERSION_NUMBER < 0x10100000L
+#  define X509_OBJECT_get0_X509(o) ((o)->data.x509)
+#  define X509_STORE_get0_objects(o) ((o)->objs)
+# endif
 #endif
 
 enum {
@@ -172,13 +175,13 @@ verify_cert_host( const server_conf_t *conf, conn_t *sock )
 
 	trusted = (STACK_OF(X509_OBJECT) *)sock->conf->trusted_certs;
 	for (i = 0; i < sk_X509_OBJECT_num( trusted ); i++) {
-		if (!X509_cmp( cert, sk_X509_OBJECT_value( trusted, i )->data.x509 ))
+		if (!X509_cmp( cert, X509_OBJECT_get0_X509( sk_X509_OBJECT_value( trusted, i ) ) ))
 			return 0;
 	}
 
 	err = SSL_get_verify_result( sock->ssl );
 	if (err != X509_V_OK) {
-		error( "SSL error connecting %s: %s\n", sock->name, ERR_error_string( err, NULL ) );
+		error( "SSL error connecting %s: %s\n", sock->name, X509_verify_cert_error_string( err ) );
 		return -1;
 	}
 
@@ -223,7 +226,7 @@ init_ssl_ctx( const server_conf_t *conf )
 		       conf->cert_file, ERR_error_string( ERR_get_error(), 0 ) );
 		return 0;
 	}
-	mconf->trusted_certs = (_STACK *)sk_X509_OBJECT_dup( SSL_CTX_get_cert_store( mconf->SSLContext )->objs );
+	mconf->trusted_certs = (_STACK *)sk_X509_OBJECT_dup( X509_STORE_get0_objects( SSL_CTX_get_cert_store( mconf->SSLContext ) ) );
 	if (mconf->system_certs && !SSL_CTX_set_default_verify_paths( mconf->SSLContext ))
 		warn( "Warning: Unable to load default certificate files: %s\n",
 		      ERR_error_string( ERR_get_error(), 0 ) );