diff --git a/openpower/configs/hostboot/p9dsu.config b/openpower/configs/hostboot/p9dsu.config
index 30489ee..9a8b3fa 100644
--- a/openpower/configs/hostboot/p9dsu.config
+++ b/openpower/configs/hostboot/p9dsu.config
@@ -63,6 +63,6 @@
 # set for trace debug to console
 set CONSOLE_OUTPUT_TRACE
 
-unset CONFIG_SECUREBOOT
-unset CONFIG_TPMDD
-unset CONFIG_TPM_NUVOTON
+unset SECUREBOOT
+unset TPMDD
+unset TPM_NUVOTON