diff --git a/tftf_config/fvp-rdn2-default b/tftf_config/fvp-rdn2-default
index aea2b19..3ff912a 100644
--- a/tftf_config/fvp-rdn2-default
+++ b/tftf_config/fvp-rdn2-default
@@ -1,3 +1,3 @@
 CROSS_COMPILE=aarch64-none-elf-
-CSS_SGI_PLATFORM_VARIANT=0
+NRD_PLATFORM_VARIANT=0
 PLAT=rdn2
diff --git a/tftf_config/fvp-rdn2cfg1-default b/tftf_config/fvp-rdn2cfg1-default
index 4be48dc..dc5e4fb 100644
--- a/tftf_config/fvp-rdn2cfg1-default
+++ b/tftf_config/fvp-rdn2cfg1-default
@@ -1,3 +1,3 @@
 CROSS_COMPILE=aarch64-none-elf-
-CSS_SGI_PLATFORM_VARIANT=1
+NRD_PLATFORM_VARIANT=1
 PLAT=rdn2
diff --git a/tftf_config/fvp-rdn2cfg3-default b/tftf_config/fvp-rdn2cfg3-default
index f5bbda1..ae2117c 100644
--- a/tftf_config/fvp-rdn2cfg3-default
+++ b/tftf_config/fvp-rdn2cfg3-default
@@ -1,3 +1,3 @@
 CROSS_COMPILE=aarch64-none-elf-
-CSS_SGI_PLATFORM_VARIANT=3
+NRD_PLATFORM_VARIANT=3
 PLAT=rdn2