diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 713fb58ca50724309d14f326c047bc4443df4772..5d1ae854bfdaccc39737b08b17ab8f4373dfa69f 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -5,6 +5,7 @@ config SUPERH
 	select HAVE_IDE if HAS_IOPORT
 	select HAVE_MEMBLOCK
 	select HAVE_MEMBLOCK_NODE_MAP
+	select ARCH_DISCARD_MEMBLOCK
 	select HAVE_OPROFILE
 	select HAVE_GENERIC_DMA_COHERENT
 	select HAVE_ARCH_TRACEHOOK