diff --git a/tools/testing/selftests/net/tcp_mmap.c b/tools/testing/selftests/net/tcp_mmap.c
index 77f762780199ff1f69f9f6b3f18e72deddb69f5e..e8c5dff448eb0b8d995393004ed1c1e982712bc6 100644
--- a/tools/testing/selftests/net/tcp_mmap.c
+++ b/tools/testing/selftests/net/tcp_mmap.c
@@ -402,7 +402,7 @@ int main(int argc, char *argv[])
 		exit(1);
 	}
 
-	fd = socket(AF_INET6, SOCK_STREAM, 0);
+	fd = socket(cfg_family, SOCK_STREAM, 0);
 	if (fd == -1) {
 		perror("socket");
 		exit(1);