diff --git a/lib_mips/mips_linux.c b/lib_mips/mips_linux.c
index 952d5a9..0823bc0 100644
--- a/lib_mips/mips_linux.c
+++ b/lib_mips/mips_linux.c
@@ -33,6 +33,8 @@ DECLARE_GLOBAL_DATA_PTR;
 #define	LINUX_MAX_ENVS		256
 #define	LINUX_MAX_ARGS		256
 
+#define UBOOT_MAGIC_NUMBER	0x55424F4F	/* UBOO */
+
 #ifdef CONFIG_SHOW_BOOT_PROGRESS
 # include <status_led.h>
 # define SHOW_BOOT_PROGRESS(arg)	show_boot_progress(arg)
@@ -213,7 +215,7 @@ void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
 	/* we assume that the kernel is in place */
 	printf ("\nStarting kernel ...\n\n");
 
-	theKernel (linux_argc, linux_argv, linux_env, 0);
+	theKernel (linux_argc, linux_argv, linux_env, UBOOT_MAGIC_NUMBER);
 }
 
 static void linux_params_init (ulong start, char *line)