diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S
index 651ff1c..8fa0ff7 100644
--- a/cpu/mpc85xx/start.S
+++ b/cpu/mpc85xx/start.S
@@ -30,6 +30,7 @@
 
 #include <config.h>
 #include <mpc85xx.h>
+#include <timestamp.h>
 #include <version.h>
 
 #define _LINUX_CONFIG_H 1	/* avoid reading Linux autoconf.h file	*/
@@ -274,7 +275,7 @@
 	.globl	version_string
 version_string:
 	.ascii U_BOOT_VERSION
-	.ascii " (", __DATE__, " - ", __TIME__, ")"
+	.ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
 	.ascii CONFIG_IDENT_STRING, "\0"
 
 	.align	4