diff --git a/tests/libtest.c b/tests/libtest.c
index b2e933a1..e363d402 100644
--- a/tests/libtest.c
+++ b/tests/libtest.c
@@ -264,7 +264,7 @@ static void *_ftp_server_thread(void *ctx)
 	int pasv_port, found;
 	unsigned io_pos;
 
-#if defined(_WIN32) || defined(_WIN64)
+#ifdef _WIN32
 	signal(SIGTERM, sigterm_handler);
 #else
 	sigaction(SIGTERM, &(struct sigaction) { .sa_handler = sigterm_handler }, NULL);