diff --git a/arch/blackfin/include/asm/u-boot.h b/arch/blackfin/include/asm/u-boot.h
index df81183..7abd6c2 100644
--- a/arch/blackfin/include/asm/u-boot.h
+++ b/arch/blackfin/include/asm/u-boot.h
@@ -29,7 +29,7 @@
 #define _U_BOOT_H_	1
 
 typedef struct bd_info {
-	int bi_baudrate;		/* serial console baudrate */
+	unsigned int bi_baudrate;	/* serial console baudrate */
 	unsigned long bi_boot_params;	/* where this board expects params */
 	unsigned long bi_memstart;	/* start of DRAM memory */
 	phys_size_t bi_memsize;		/* size  of DRAM memory in bytes */