diff --git a/plat/arm/board/fvp/fvp_common.c b/plat/arm/board/fvp/fvp_common.c
index f8463f1..f5d9940 100644
--- a/plat/arm/board/fvp/fvp_common.c
+++ b/plat/arm/board/fvp/fvp_common.c
@@ -536,6 +536,7 @@
 	assert(manifest != NULL);
 
 	manifest->version = RMMD_MANIFEST_VERSION;
+	manifest->padding = 0U; /* RES0 */
 	manifest->plat_data = (uintptr_t)NULL;
 
 	return 0;
diff --git a/plat/arm/common/trp/arm_trp_setup.c b/plat/arm/common/trp/arm_trp_setup.c
index 59b4c06..aeacd10 100644
--- a/plat/arm/common/trp/arm_trp_setup.c
+++ b/plat/arm/common/trp/arm_trp_setup.c
@@ -28,6 +28,9 @@
 
 static int arm_trp_process_manifest(rmm_manifest_t *manifest)
 {
+	/* padding field on the manifest must be RES0 */
+	assert(manifest->padding == 0U);
+
 	/* Verify the Boot Manifest Version. Only the Major is considered */
 	if (RMMD_MANIFEST_VERSION_MAJOR !=
 		RMMD_GET_MANIFEST_VERSION_MAJOR(manifest->version)) {