diff --git a/check_ssl_cert b/check_ssl_cert
index bb6f401..295d4a8 100755
--- a/check_ssl_cert
+++ b/check_ssl_cert
@@ -4033,7 +4033,10 @@ $2"
             if [ $# -gt 1 ]; then
 
                 # shellcheck disable=SC2295
-                if [ "${2%${2#?}}"x = '-x' ]; then
+                if [ -z "$2" ]; then
+                    DANE=1
+                    shift 2
+                elif [ "${2%${2#?}}"x = '-x' ]; then
                     DANE=1
                     shift
                 else