diff --git a/mx29f002.h b/mx29f002.h
index 7d3cf20..d180fae 100644
--- a/mx29f002.h
+++ b/mx29f002.h
@@ -3,6 +3,6 @@
 
 extern int probe_29f002(struct flashchip *flash);
 extern int erase_29f002(struct flashchip *flash);
-extern int write_29f002(struct flashchip *flash, unsigned char *buf);
+extern int write_29f002(struct flashchip *flash, uint8_t *buf);
 
 #endif				/* !__MX29F002_H__ */