diff --git a/tests/cpp/t12946.nim b/tests/cpp/t12946.nim
index cf6bf5cfc4..79cd562511 100644
--- a/tests/cpp/t12946.nim
+++ b/tests/cpp/t12946.nim
@@ -1,3 +1,7 @@
+discard """
+  targets: "c cpp"
+"""
+
 import std/atomics
 type Futex = distinct Atomic[int32]