diff -up a/slock.c b/slock.c
--- a/slock.c	2022-10-04 19:45:59.000000000 +0200
+++ b/slock.c	2024-01-27 22:36:28.398501798 +0100
@@ -165,7 +165,6 @@ readpw(Display *dpy, struct xrandr *rr,
 				else
 					running = !!strcmp(inputhash, hash);
 				if (running) {
-					XBell(dpy, 100);
 					failure = 1;
 				}
 				explicit_bzero(&passwd, sizeof(passwd));