diff --git a/plat/arm/css/sgi/include/sgi_variant.h b/plat/arm/css/sgi/include/sgi_variant.h
index e9b96dd..c75f213 100644
--- a/plat/arm/css/sgi/include/sgi_variant.h
+++ b/plat/arm/css/sgi/include/sgi_variant.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -10,9 +10,9 @@
 /* SSC_VERSION values for SGI575 */
 #define SGI575_SSC_VER_PART_NUM		0x0783
 
-/* SID Version values for SGI-Clark */
-#define SGI_CLARK_SID_VER_PART_NUM		0x0786
-#define SGI_CLARK_HELIOS_CONFIG_ID		0x2
+/* SID Version values for RD-N1E1-Edge */
+#define RD_N1E1_EDGE_SID_VER_PART_NUM		0x0786
+#define RD_E1_EDGE_CONFIG_ID			0x2
 
 /* Structure containing SGI platform variant information */
 typedef struct sgi_platform_info {