diff --git a/openpower/configs/hostboot/rainier.config b/openpower/configs/hostboot/rainier.config
index ecd0473..68a9aa6 100755
--- a/openpower/configs/hostboot/rainier.config
+++ b/openpower/configs/hostboot/rainier.config
@@ -88,3 +88,5 @@
 unset LOAD_PHYP_FROM_BOOTKERNEL
 set LOAD_LIDS_VIA_PLDM
 
+# enable multi-chip
+unset FORCE_SINGLE_CHIP