diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7888c9803eb00b3ad1d166923182d5d1f4294bda..979aac3e2fbfc9e90d08ea8de2d879ae5720a99f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2,6 +2,7 @@ config ARM
 	bool
 	default y
 	select ARCH_CLOCKSOURCE_DATA
+	select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID
 	select ARCH_HAS_DEBUG_VIRTUAL
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_HAS_ELF_RANDOMIZE