diff --git a/tests/features/S2N_ATOMIC_SUPPORTED.c b/tests/features/S2N_ATOMIC_SUPPORTED.c
index e9244361f4c..3e2b29407d6 100644
--- a/tests/features/S2N_ATOMIC_SUPPORTED.c
+++ b/tests/features/S2N_ATOMIC_SUPPORTED.c
@@ -18,9 +18,9 @@
 
 int main() {
     /* Atomic builtins are supported by gcc 4.7.3 and later. */
-    sig_atomic_t atomic = 0;
-    __atomic_test_and_set(&atomic, __ATOMIC_RELAXED);
-    __atomic_clear(&atomic, __ATOMIC_RELAXED);
+    sig_atomic_t atomic = 0, value = 1;
+    __atomic_store(&atomic, &value, __ATOMIC_RELAXED);
+    __atomic_load(&atomic, &value, __ATOMIC_RELAXED);
 
     /* _Static_assert is supported for C99 by gcc 4.6 and later,
      * so using it here shouldn't limit use of the atomic builtins. */