diff --git a/include/libssh/libssh.h b/include/libssh/libssh.h
index 5376f02c..406d3d9c 100644
--- a/include/libssh/libssh.h
+++ b/include/libssh/libssh.h
@@ -317,6 +317,7 @@ int buffer_get_len(BUFFER *buffer);
 
 
 /* in auth.c */
+int ssh_auth_list(SSH_SESSION *session);
 /* these functions returns AUTH_ERROR is some serious error has happened,
   AUTH_SUCCESS if success,
   AUTH_PARTIAL if partial success,
@@ -331,7 +332,7 @@ int ssh_userauth_kbdint(SSH_SESSION *session, const char *user, const char *subm
 int ssh_userauth_kbdint_getnprompts(SSH_SESSION *session);
 char *ssh_userauth_kbdint_getname(SSH_SESSION *session);
 char *ssh_userauth_kbdint_getinstruction(SSH_SESSION *session);
-char *ssh_userauth_kbdint_getprompt(SSH_SESSION *session, int i, char *echo);
+char *ssh_userauth_kbdint_getprompt(SSH_SESSION *session, unsigned int i, char *echo);
 void ssh_userauth_kbdint_setanswer(SSH_SESSION *session, unsigned int i, const char *answer);
 
 
diff --git a/libssh/auth.c b/libssh/auth.c
index c2fc29f8..2c072adf 100644
--- a/libssh/auth.c
+++ b/libssh/auth.c
@@ -54,7 +54,6 @@ static int wait_auth_status(SSH_SESSION *session,int kbdint){
     int cont=1;
     STRING *auth;
     u8 partial=0;
-    int todo = 0;
     char *auth_methods = NULL;
     enter_function();
     while(cont){
@@ -823,9 +822,9 @@ char *ssh_userauth_kbdint_getinstruction(SSH_SESSION *session){
  * \returns pointer to the prompt. Do not free it
  */
 
-char *ssh_userauth_kbdint_getprompt(SSH_SESSION *session, int i,
+char *ssh_userauth_kbdint_getprompt(SSH_SESSION *session, unsigned int i,
         char *echo){
-    if(i > session->kbdint->nprompts || i<0)
+    if(i > session->kbdint->nprompts)
         return NULL;
     if(echo)
         *echo=session->kbdint->echo[i];