diff --git a/util-linux/hwclock.c b/util-linux/hwclock.c
index 45959e7..3021442 100644
--- a/util-linux/hwclock.c
+++ b/util-linux/hwclock.c
@@ -209,7 +209,7 @@
 	bb_applet_long_options = hwclock_long_options;
 #endif
 
-	bb_opt_complementally = "!r~ws:w~rs:s~wr:l~u:u~l";
+	bb_opt_complementally = "?r~ws:w~rs:s~wr:l~u:u~l";
 	opt = bb_getopt_ulflags(argc, argv, "lursw");
 
 	/* If -u or -l wasn't given check if we are using utc */