diff --git a/src/client.c b/src/client.c
index 0ad24c6..93b04e7 100644
--- a/src/client.c
+++ b/src/client.c
@@ -224,6 +224,13 @@ free_local_client(struct Client *client_p)
 		rb_close(client_p->localClient->F);
 	}
 
+	if (client_p->localClient->auth_user)
+	{
+		memset(client_p->localClient->auth_user, 0,
+			strlen(client_p->localClient->auth_user));
+		rb_free(client_p->localClient->auth_user);
+	}
+
 	if(client_p->localClient->passwd)
 	{
 		memset(client_p->localClient->passwd, 0,