diff --git a/.gitignore b/.gitignore
index 1bec925..6207059 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 host_key
 host_key.pub
 ssh-chat
+*.log
diff --git a/client.go b/client.go
index b780aa9..e68d7f5 100644
--- a/client.go
+++ b/client.go
@@ -95,7 +95,7 @@ func (c *Client) ColoredName() string {
 
 // SysMsg sends a message in continuous format over the message channel
 func (c *Client) SysMsg(msg string, args ...interface{}) {
-	c.Msg <- ContinuousFormat(systemMessageFormat, "-> "+fmt.Sprintf(msg, args...))
+	c.Send(ContinuousFormat(systemMessageFormat, "-> "+fmt.Sprintf(msg, args...)))
 }
 
 // Write writes the given message
@@ -256,7 +256,7 @@ func (c *Client) handleShell(channel ssh.Channel) {
 					c.SysMsg("Missing $NAME from: /nick $NAME")
 				}
 			case "/whois":
-				if len(parts) == 2 {
+				if len(parts) >= 2 {
 					client := c.Server.Who(parts[1])
 					if client != nil {
 						version := reStripText.ReplaceAllString(string(client.Conn.ClientVersion()), "")
diff --git a/server.go b/server.go
index d22db99..c425b80 100644
--- a/server.go
+++ b/server.go
@@ -80,6 +80,9 @@ func NewServer(privateKey []byte) (*Server, error) {
 			perm := &ssh.Permissions{Extensions: map[string]string{"fingerprint": fingerprint}}
 			return perm, nil
 		},
+		KeyboardInteractiveCallback: func(conn ssh.ConnMetadata, challenge ssh.KeyboardInteractiveChallenge) (*ssh.Permissions, error) {
+			return nil, nil
+		},
 	}
 	config.AddHostKey(signer)