diff --git a/openpower/configs/rainier_defconfig b/openpower/configs/rainier_defconfig
index 5575a3c..2423c0a 100644
--- a/openpower/configs/rainier_defconfig
+++ b/openpower/configs/rainier_defconfig
@@ -65,6 +65,7 @@
 BR2_HOSTBOOT_BINARY_SBE_FILENAME="p10_sbe.img.ecc"
 BR2_HOSTBOOT_BINARY_SBEC_FILENAME="centaur_sbec_pad.img.ecc"
 BR2_HOSTBOOT_BINARY_WINK_FILENAME="p10.ref_image.hdr.bin.ecc"
+BR2_PACKAGE_OCMB_EXPLORER_FW=y
 BR2_IMA_CATALOG_FILENAME="ima_catalog.bin"
 BR2_OPENPOWER_TARGETING_BIN_FILENAME="RAINIER_HB.targeting.bin"
 BR2_OPENPOWER_TARGETING_ECC_FILENAME="RAINIER_HB.targeting.bin.ecc"