diff --git a/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf b/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf
index 1d9e6f7..6e37167 100644
--- a/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf
+++ b/meta-ibm/meta-witherspoon/conf/machine/witherspoon.conf
@@ -5,6 +5,8 @@
 
 OBMC_MACHINE_FEATURES += "obmc-mrw obmc-ubi-fs openpower-ubi-fs"
 
+OBMC_POWER_SUPPLY_INSTANCES = "0 1"
+
 PREFERRED_PROVIDER_virtual/p9-vcs-workaround = 'vcs-pre-post'
 
 require conf/machine/include/ast2500.inc