diff --git a/tests/test_dns.c b/tests/test_dns.c
index 7e07663..acf095c 100644
--- a/tests/test_dns.c
+++ b/tests/test_dns.c
@@ -76,6 +76,8 @@ static void test_gethostbyname(const struct test_host *host)
 	return;
 }
 
+#ifdef __linux__
+
 static void test_gethostbyaddr_r_failed(void)
 {
 	int result;
@@ -129,6 +131,8 @@ static void test_gethostbyaddr_r(const struct test_host *host)
   ok(1, "Resolved address");
 }
 
+#endif
+
 static void test_gethostbyaddr(const struct test_host *host)
 {
 	struct hostent *he;
@@ -199,8 +203,10 @@ int main(int argc, char **argv)
 	test_getaddrinfo(&tor_check);
 	test_gethostbyname(&tor_dir_auth1);
 	test_gethostbyaddr(&tor_dir_auth2);
+#ifdef __linux__
 	test_gethostbyaddr_r(&tor_dir_auth2);
 	test_gethostbyaddr_r_failed();
+#endif
 	test_getaddrinfo(&tor_localhost);
 
 end: