diff --git a/net/tftp.c b/net/tftp.c
index e34f20247bcf148133618348fe3c95f824601c03..81f9af430e594c08b509b64cb7463ff0f6a9b216 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -198,7 +198,7 @@ store_block(unsigned block, uchar *src, unsigned len)
 }
 
 /* Clear our state ready for a new transfer */
-void new_transfer(void)
+static void new_transfer(void)
 {
 	TftpLastBlock = 0;
 	TftpBlockWrap = 0;