diff --git a/openpower/package/openpower-ffs/openpower-ffs.mk b/openpower/package/openpower-ffs/openpower-ffs.mk
index 3a3ea2d..1e6b9bf 100644
--- a/openpower/package/openpower-ffs/openpower-ffs.mk
+++ b/openpower/package/openpower-ffs/openpower-ffs.mk
@@ -1,5 +1,5 @@
-OPENPOWER_FFS_VERSION = bf4630076762d9c20c16c80c1c791f352b046dd1
-OPENPOWER_FFS_SITE = $(call github,open-power,ffs,$(OPENPOWER_FFS_VERSION))
+OPENPOWER_FFS_VERSION ?= bf4630076762d9c20c16c80c1c791f352b046dd1
+OPENPOWER_FFS_SITE ?= $(call github,open-power,ffs,$(OPENPOWER_FFS_VERSION))
 OPENPOWER_FFS_LICENSE = GPLv2+
 
 define HOST_OPENPOWER_FFS_BUILD_CMDS