diff --git a/include/configs/mpc5121ads.h b/include/configs/mpc5121ads.h
index fbcc839..cbfcb70 100644
--- a/include/configs/mpc5121ads.h
+++ b/include/configs/mpc5121ads.h
@@ -270,10 +270,10 @@
 
 /* Use SRAM for initial stack */
 #define CONFIG_SYS_INIT_RAM_ADDR	CONFIG_SYS_SRAM_BASE		/* Initial RAM address */
-#define CONFIG_SYS_INIT_RAM_END	CONFIG_SYS_SRAM_SIZE		/* End of used area in RAM */
+#define CONFIG_SYS_INIT_RAM_SIZE	CONFIG_SYS_SRAM_SIZE		/* Size of used area in RAM */
 
 #define CONFIG_SYS_GBL_DATA_SIZE	0x100			/* num bytes initial data */
-#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_END - CONFIG_SYS_GBL_DATA_SIZE)
+#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_SIZE - CONFIG_SYS_GBL_DATA_SIZE)
 #define CONFIG_SYS_INIT_SP_OFFSET	CONFIG_SYS_GBL_DATA_OFFSET
 
 #define CONFIG_SYS_MONITOR_BASE	CONFIG_SYS_TEXT_BASE		/* Start of monitor */