diff --git a/lib/atomic64_test.c b/lib/atomic64_test.c
index 9087d71..250ed11 100644
--- a/lib/atomic64_test.c
+++ b/lib/atomic64_test.c
@@ -113,7 +113,8 @@
 	r += one;
 	BUG_ON(v.counter != r);
 
-#if defined(CONFIG_X86) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(_ASM_GENERIC_ATOMIC64_H)
+#if defined(CONFIG_X86) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
+    defined(CONFIG_S390) || defined(_ASM_GENERIC_ATOMIC64_H)
 	INIT(onestwos);
 	BUG_ON(atomic64_dec_if_positive(&v) != (onestwos - 1));
 	r -= one;