1 files changed, 9 insertions, 3 deletions

diff --git a/plugins/check_users.c b/plugins/check_users.c
index b7b7bd24..cd3bd181 100644
--- a/plugins/check_users.c
+++ b/plugins/check_users.c
@@ -215,8 +215,11 @@ check_users_config_wrapper process_arguments(int argc, char **argv) {
         if (warning_range) {
                 tmp = mp_parse_range_string(warning_range);
         } else {
-                tmp = mp_parse_range_string(argv[option_char++]);
-        }
+                printf("Warning threshold missing\n");
+                print_usage();
+                exit(STATE_UNKNOWN);
+                }
+
         if (tmp.error == MP_PARSING_SUCCES) {
                 result.config.thresholds.warning = tmp.range;
                 result.config.thresholds.warning_is_set = true;
@@ -228,8 +231,11 @@ check_users_config_wrapper process_arguments(int argc, char **argv) {
         if (critical_range) {
                 tmp = mp_parse_range_string(critical_range);
         } else {
-                tmp = mp_parse_range_string(argv[option_char++]);
+                printf("Critical threshold missing\n");
+                print_usage();
+                exit(STATE_UNKNOWN);
         }
+
         if (tmp.error == MP_PARSING_SUCCES) {
                 result.config.thresholds.critical = tmp.range;
                 result.config.thresholds.critical_is_set = true;