diff --git a/include/configs/o2dnt.h b/include/configs/o2dnt.h
index b5878b4..9f5a0b8 100644
--- a/include/configs/o2dnt.h
+++ b/include/configs/o2dnt.h
@@ -217,8 +217,7 @@
 #define CONFIG_SYS_INIT_RAM_SIZE	MPC5XXX_SRAM_SIZE	/* Size of used area in DPRAM */
 
 
-#define CONFIG_SYS_GBL_DATA_SIZE	128	/* size in bytes reserved for initial data */
-#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_SIZE - CONFIG_SYS_GBL_DATA_SIZE)
+#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
 #define CONFIG_SYS_INIT_SP_OFFSET	CONFIG_SYS_GBL_DATA_OFFSET
 
 #define CONFIG_SYS_MONITOR_BASE	CONFIG_SYS_TEXT_BASE