diff --git a/src/Actions/Belgium.php b/src/Actions/Belgium.php
index 5c71cdc58..ae72d0020 100644
--- a/src/Actions/Belgium.php
+++ b/src/Actions/Belgium.php
@@ -37,7 +37,7 @@ protected function fixedHolidays(): array
     {
         $dates = [
             'Nieuwjaar' => '01-01',
-            'Dag van de Arbeid' => '01-01',
+            'Dag van de Arbeid' => '01-05',
             'Nationale Feestdag' => '21-07',
             'OLV Hemelvaart' => '15-08',
             'Allerheiligen' => '01-11',