diff --git a/src/syncterm/telnet_io.c b/src/syncterm/telnet_io.c
index 89887b7f3e726727e7ade16253b2c2c62d21e4a1..4147b56ccda7fd111a5624c3e0abb57b033be7be 100644
--- a/src/syncterm/telnet_io.c
+++ b/src/syncterm/telnet_io.c
@@ -50,7 +50,7 @@ void putcom(BYTE* buf, size_t len)
 	size_t i;
 
 	for(i=0;i<len;i++)
-		p+=sprintf(p,"%02X ", buf[i]);
+		p+=sprintf(p,"%u ", buf[i]);
 
 	lprintf(LOG_DEBUG,"TX: %s", str);
 	send(telnet_sock, buf, len, 0);