diff --git a/tools/testing/selftests/net/af_unix/unix_connect.c b/tools/testing/selftests/net/af_unix/unix_connect.c
index 157e44ef7f37..d799fd8f5c7c 100644
--- a/tools/testing/selftests/net/af_unix/unix_connect.c
+++ b/tools/testing/selftests/net/af_unix/unix_connect.c
@@ -3,6 +3,7 @@
 #define _GNU_SOURCE
 #include <sched.h>
 
+#include <stddef.h>
 #include <stdio.h>
 #include <unistd.h>
 
@@ -112,8 +113,6 @@ FIXTURE_TEARDOWN(unix_connect)
 		remove("test");
 }
 
-#define offsetof(type, member) ((size_t)&((type *)0)->(member))
-
 TEST_F(unix_connect, test)
 {
 	socklen_t addrlen;