diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index 2564295ef0..12b3298a06 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -1461,11 +1461,9 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat
                 if (proc_cmdline_value_missing(key, value))
                         return 0;
 
-                r = safe_atou64(value, &arg_event_timeout_usec);
-                if (r >= 0) {
-                        arg_event_timeout_usec *= USEC_PER_SEC;
-                        arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;
-                }
+                r = parse_sec(value, &arg_event_timeout_usec);
+                if (r >= 0)
+                        arg_event_timeout_warn_usec = DIV_ROUND_UP(arg_event_timeout_usec, 3);
 
         } else if (proc_cmdline_key_streq(key, "udev.children_max")) {
 
@@ -1554,13 +1552,11 @@ static int parse_argv(int argc, char *argv[]) {
                                 log_warning_errno(r, "Failed to parse --exec-delay= value '%s', ignoring: %m", optarg);
                         break;
                 case 't':
-                        r = safe_atou64(optarg, &arg_event_timeout_usec);
+                        r = parse_sec(optarg, &arg_event_timeout_usec);
                         if (r < 0)
-                                log_warning("Invalid --event-timeout ignored: %s", optarg);
-                        else {
-                                arg_event_timeout_usec *= USEC_PER_SEC;
-                                arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;
-                        }
+                                log_warning_errno(r, "Failed to parse --event-timeout= value '%s', ignoring: %m", optarg);
+
+                        arg_event_timeout_warn_usec = DIV_ROUND_UP(arg_event_timeout_usec, 3);
                         break;
                 case 'D':
                         arg_debug = true;