--- a/cli-session.c	Wed Jun 03 22:59:59 2015 +0800
+++ b/cli-session.c	Thu Jun 04 22:25:28 2015 +0800
@@ -194,7 +194,7 @@
 	CHECKCLEARTOWRITE();
 
 	buf_putbyte(ses.writepayload, SSH_MSG_SERVICE_REQUEST);
-	buf_putstring(ses.writepayload, servicename, strlen(servicename));
+	buf_putstring(ses.writepayload, (const unsigned char *)servicename, strlen(servicename));
 
 	encrypt_packet();
 	TRACE(("leave send_msg_service_request"))
@@ -374,10 +374,10 @@
 /* Operates in-place turning dirty (untrusted potentially containing control
  * characters) text into clean text. 
  * Note: this is safe only with ascii - other charsets could have problems. */
-void cleantext(unsigned char* dirtytext) {
+void cleantext(char* dirtytext) {
 
 	unsigned int i, j;
-	unsigned char c;
+	char c;
 
 	j = 0;
 	for (i = 0; dirtytext[i] != '\0'; i++) {