diff --git a/drivers/ddr/altera/iossm_mailbox.c b/drivers/ddr/altera/iossm_mailbox.c
index fc09dde..21f9495 100644
--- a/drivers/ddr/altera/iossm_mailbox.c
+++ b/drivers/ddr/altera/iossm_mailbox.c
@@ -41,7 +41,7 @@
 
 /* Offset of Mailbox Read-only Registers  */
 #define IOSSM_MAILBOX_HEADER_OFFSET			0x0
-#define IOSSM_MEM_INTF_INFO_0_OFFSET			0X200
+#define IOSSM_MEM_INTF_INFO_0_OFFSET			0x200
 #define IOSSM_MEM_INTF_INFO_1_OFFSET			0x280
 #define IOSSM_MEM_TECHNOLOGY_INTF0_OFFSET		0x210
 #define IOSSM_MEM_TECHNOLOGY_INTF1_OFFSET		0x290