diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 2e6310b..802b082 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -348,6 +348,7 @@
 config ARCH_SPARSEMEM_ENABLE
 	def_bool y
 	depends on ARCH_DISCONTIGMEM_ENABLE
+	select SPARSEMEM_VMEMMAP_ENABLE
 
 config ARCH_DISCONTIGMEM_DEFAULT
 	def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)