diff --git a/tests/Result/RoundDateTimeSpec.php b/tests/Result/RoundDateTimeSpec.php
index 947ab489..0aa242c7 100644
--- a/tests/Result/RoundDateTimeSpec.php
+++ b/tests/Result/RoundDateTimeSpec.php
@@ -6,11 +6,12 @@
 use Doctrine\ORM\AbstractQuery;
 use Doctrine\ORM\Query\Parameter;
 use Happyr\DoctrineSpecification\Result\RoundDateTime;
+use PhpSpec\ObjectBehavior;
 
 /**
  * @mixin RoundDateTime
  */
-class RoundDateTimeSpec
+class RoundDateTimeSpec extends ObjectBehavior
 {
     private $roundSeconds = 3600;
 
@@ -31,16 +32,14 @@ public function it_round_date_time_in_query_parameters_for_given_time(
     ) {
         $name = 'now';
         $type = 'datetime';
-        $date = new \DateTime('15:55:34');
-
-        $scalarParam->getValue()->willReturn('foo');
-
-        $datetimeParam->getValue()->willReturn($date);
-        $datetimeParam->getName()->willReturn($name);
-        $datetimeParam->getType()->willReturn($type);
-
-        $query->getParameters()->willReturn(new ArrayCollection([$scalarParam, $datetimeParam]));
-        $query->setParameter($name, new \DateTime('15:00:00'), $type)->shouldBeCalled();
+        $actual = new \DateTime('15:55:34');
+        $expected = new \DateTimeImmutable('15:00:00');
+
+        $query->getParameters()->willReturn(new ArrayCollection([
+            new Parameter('status', 'active'), // scalar param
+            new Parameter($name, $actual, $type),
+        ]));
+        $query->setParameter($name, $expected, $type)->shouldBeCalled();
 
         $this->modify($query);
     }