diff --git a/net/tftp.h b/net/tftp.h
index 3abdf7b..c51aa25 100644
--- a/net/tftp.h
+++ b/net/tftp.h
@@ -16,7 +16,7 @@
  */
 
 /* tftp.c */
-extern void	TftpStart (void);	/* Begin TFTP get */
+void TftpStart(enum proto_t protocol);	/* Begin TFTP get/put */
 
 #ifdef CONFIG_CMD_TFTPSRV
 extern void	TftpStartServer(void);	/* Wait for incoming TFTP put */