diff --git a/tomb b/tomb
index ee6c8d1..0618ed3 100755
--- a/tomb
+++ b/tomb
@@ -1287,7 +1287,11 @@ ask_key_password() {
 # call cryptsetup with arguments using the currently known secret
 # echo flags eliminate newline and disable escape (BSD_ECHO)
 _cryptsetup() {
-	print -R -n - "$TOMBSECRET" | _sudo cryptsetup --type luks1 --key-file - ${@}
+	if option_is_set -q; then
+		print -R -n - "$TOMBSECRET" | _sudo cryptsetup --type luks1 --key-file - ${@} 2> /dev/null
+	else
+		print -R -n - "$TOMBSECRET" | _sudo cryptsetup --type luks1 --key-file - ${@}
+	fi
 	return $?
 }