diff -up sudo-1.8.6p3/plugins/sudoers/visudo.c.fix sudo-1.8.6p3/plugins/sudoers/visudo.c
--- sudo-1.8.6p3/plugins/sudoers/visudo.c.fix	2015-07-22 11:29:03.899122767 +0200
+++ sudo-1.8.6p3/plugins/sudoers/visudo.c	2015-07-22 11:29:33.001826535 +0200
@@ -201,7 +201,7 @@ main(int argc, char *argv[])
 		strict = true;		/* strict mode */
 		break;
 	    case 'q':
-		quiet = false;		/* quiet mode */
+		quiet = true;		/* quiet mode */
 		break;
 	    default:
 		usage(1);