diff --git a/mm/Kconfig b/mm/Kconfig
index c39f868947e3e3dc198b8af8d8782c744e089d96..518378cb1267b3963d3df7293038028859343859 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -961,6 +961,7 @@ config RSS_THRESHOLD
 config MEM_PURGEABLE
 	bool "Purgeable memory feature"
 	default n
+	depends on 64BIT
 	select ARCH_USES_HIGH_VMA_FLAGS
 	help
 	  Support purgeable pages for process