diff --git a/tools/testing/selftests/bpf/map_tests/sk_storage_map.c b/tools/testing/selftests/bpf/map_tests/sk_storage_map.c
index e569edc67..9228e33cc 100755
--- a/tools/testing/selftests/bpf/map_tests/sk_storage_map.c
+++ b/tools/testing/selftests/bpf/map_tests/sk_storage_map.c
@@ -416,7 +416,7 @@ static void test_sk_storage_map_stress_free(void)
 		rlim_new.rlim_max = rlim_new.rlim_cur + 128;
 		err = setrlimit(RLIMIT_NOFILE, &rlim_new);
 		CHECK(err, "setrlimit(RLIMIT_NOFILE)", "rlim_new:%lu errno:%d",
-		      rlim_new.rlim_cur, errno);
+		      (unsigned long) rlim_new.rlim_cur, errno);
 	}
 
 	err = do_sk_storage_map_stress_free();