1 files changed, 1 insertions, 1 deletions
diff --git a/net/tftp.c b/net/tftp.c
index 4999707..7aa3e23 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -708,7 +708,7 @@ void TftpStart(enum proto_t protocol)
 
 	TftpRemoteIP = NetServerIP;
 	if (BootFile[0] == '\0') {
-		sprintf(default_filename, "%02lX%02lX%02lX%02lX.img",
+		sprintf(default_filename, "%02X%02X%02X%02X.img",
 			NetOurIP & 0xFF,
 			(NetOurIP >>  8) & 0xFF,
 			(NetOurIP >> 16) & 0xFF,