diff --git a/tests/units/Afup/Association/Cotisations.php b/tests/units/Afup/Association/Cotisations.php
index 73598e8fb..92ea1bef2 100644
--- a/tests/units/Afup/Association/Cotisations.php
+++ b/tests/units/Afup/Association/Cotisations.php
@@ -27,8 +27,8 @@ protected function generateCotisationProvider()
             ],
             [
                 'case' => 'La cotisation précédente expire dans 1 mois, la nouvelle cotisation doit expirer dans 13 mois',
-                'date_fin' => (new \DateTime('+1 month')),
-                'expected' => (new \DateTime('+1 month'))->add(new \DateInterval('P1Y')),
+                'date_fin' => (new \DateTimeImmutable('+1 month'))->setTime(14, 0),
+                'expected' => (new \DateTimeImmutable('+1 month'))->setTime(14, 0)->add(new \DateInterval('P1Y')),
             ],
         ];
     }