diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 583d9ff..45e47bf 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -22,6 +22,14 @@
 	bool
 	default y
 
+config ARCH_HAS_ILOG2_U32
+	bool
+	default n
+
+config ARCH_HAS_ILOG2_U64
+	bool
+	default n
+
 config GENERIC_HWEIGHT
 	bool
 	default y