diff --git a/psalm.xml b/psalm.xml
index b27a5f8ba..02cb717c4 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -15,6 +15,7 @@
     <projectFiles>
         <file name="*.php" />
         <directory name="src" />
+        <directory name="tests" />
         <ignoreFiles>
             <file name="src/RecordManager/Base/Database/MongoDatabase.php" />
             <directory name="vendor" />
diff --git a/tests/RecordManagerTest/Base/Controller/CreatePreviewTest.php b/tests/RecordManagerTest/Base/Controller/CreatePreviewTest.php
index e8f542e2f..a59116cc5 100644
--- a/tests/RecordManagerTest/Base/Controller/CreatePreviewTest.php
+++ b/tests/RecordManagerTest/Base/Controller/CreatePreviewTest.php
@@ -74,7 +74,7 @@ class CreatePreviewTest extends \PHPUnit\Framework\TestCase
     public function testCreatePreview()
     {
         $record = $this->getFixture('Controller/CreatePreview/preview_marc.xml');
-        $preview = $this->getCreatePreview($record);
+        $preview = $this->getCreatePreview();
 
         $result = $preview->launch(
             $record,
diff --git a/tests/RecordManagerTest/Base/Record/CreateSampleRecordTrait.php b/tests/RecordManagerTest/Base/Record/CreateSampleRecordTrait.php
index cce17d8dd..054ab66f3 100644
--- a/tests/RecordManagerTest/Base/Record/CreateSampleRecordTrait.php
+++ b/tests/RecordManagerTest/Base/Record/CreateSampleRecordTrait.php
@@ -135,18 +135,18 @@ protected function createMarcRecord(
         string $module = 'Base',
         array $constructorParams = []
     ) {
+        $baseParams = [
+            function ($data) {
+                return new \RecordManager\Base\Marc\Marc($data);
+            },
+            new FormatCalculator(),
+        ];
         return $this->createRecord(
             $class,
             $sample,
             $dsConfig,
             $module,
-            [
-                function ($data) {
-                    return new \RecordManager\Base\Marc\Marc($data);
-                },
-                new FormatCalculator(),
-                ...$constructorParams,
-            ]
+            array_merge($baseParams, $constructorParams),
         );
     }
 }
diff --git a/tests/RecordManagerTest/Base/Utils/MetadataUtilsTest.php b/tests/RecordManagerTest/Base/Utils/MetadataUtilsTest.php
index cbed2fdde..11ca80a70 100644
--- a/tests/RecordManagerTest/Base/Utils/MetadataUtilsTest.php
+++ b/tests/RecordManagerTest/Base/Utils/MetadataUtilsTest.php
@@ -309,7 +309,7 @@ public function testCoordinateToDecimal()
 
         // Test by rounding to lowest precision for PHP 8 compatibility
         // (see https://github.com/php/php-src/blob/PHP-8.0/UPGRADING#L584#L587):
-        $precision = min(ini_get('precision'), ini_get('serialize_precision')) ?: 15;
+        $precision = (int)(min(ini_get('precision'), ini_get('serialize_precision')) ?: 15);
         foreach ($values as $from => $to) {
             $this->assertEquals(
                 is_string($to) ? $to : round($to, $precision),