diff --git a/arch/arm/configs/htcleo_defconfig b/arch/arm/configs/htcleo_defconfig
index 8b2d6ca4..eabfe521 100644
--- a/arch/arm/configs/htcleo_defconfig
+++ b/arch/arm/configs/htcleo_defconfig
@@ -401,7 +401,7 @@ CONFIG_BOUNCE=y
 CONFIG_VIRT_TO_BUS=y
 CONFIG_HAVE_MLOCK=y
 CONFIG_HAVE_MLOCKED_PAGE_BIT=y
-# CONFIG_KSM is not set
+CONFIG_KSM=y
 CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
 CONFIG_ALIGNMENT_TRAP=y
 CONFIG_ALLOW_CPU_ALIGNMENT=y