diff --git a/.github/workflows/test-unit.yml b/.github/workflows/test-unit.yml
index 2f43d3034..1ff3ae68c 100644
--- a/.github/workflows/test-unit.yml
+++ b/.github/workflows/test-unit.yml
@@ -98,7 +98,7 @@ jobs:
         image: mysql:5.6
         options: --health-cmd="mysqladmin ping" --health-interval=10s --health-timeout=5s --health-retries=5 -e MYSQL_ROOT_PASSWORD=atk4_pass_root -e MYSQL_USER=atk4_test_user -e MYSQL_PASSWORD=atk4_pass -e MYSQL_DATABASE=atk4_test
       mariadb:
-        image: mariadb
+        image: mariadb:11.2
         options: --health-cmd="mariadb-admin ping" --health-interval=10s --health-timeout=5s --health-retries=5 -e MYSQL_ROOT_PASSWORD=atk4_pass_root -e MYSQL_USER=atk4_test_user -e MYSQL_PASSWORD=atk4_pass -e MYSQL_DATABASE=atk4_test
       postgres:
         image: postgres:12-alpine
diff --git a/tests/Persistence/ArrayTest.php b/tests/Persistence/ArrayTest.php
index 10453c316..78151095e 100644
--- a/tests/Persistence/ArrayTest.php
+++ b/tests/Persistence/ArrayTest.php
@@ -562,7 +562,7 @@ public function testOrder(): void
             ['f1' => 'D'],
             ['f1' => 'E'],
         ], $d);
-        self::assertSame($d, array_values($m->export(['f1']))); // array_values to get rid of keys
+        self::assertSame($d, $m->export(['f1']));
 
         // order by one field descending
         $p = new Persistence\Array_($dbData);
@@ -584,7 +584,7 @@ public function testOrder(): void
             ['f1' => 'A'],
             ['f1' => 'A'],
         ], $d);
-        self::assertSame($d, array_values($m->export(['f1']))); // array_values to get rid of keys
+        self::assertSame($d, $m->export(['f1']));
 
         // order by two fields ascending
         $p = new Persistence\Array_($dbData);
@@ -604,7 +604,7 @@ public function testOrder(): void
             ['id' => 4, 'f1' => 'A', 'f2' => 'C'],
             ['id' => 1, 'f1' => 'A', 'f2' => 'B'],
         ], $d);
-        self::assertSame($d, array_values($m->export(['f1', 'f2', 'id']))); // array_values to get rid of keys
+        self::assertSame($d, $m->export(['f1', 'f2', 'id']));
     }
 
     public function testNoKeyException(): void
@@ -701,14 +701,14 @@ public function testLimit(): void
             ['id' => 1, 'f1' => 'A'],
             ['id' => 2, 'f1' => 'D'],
             ['id' => 3, 'f1' => 'E'],
-        ], array_values($m->export()));
+        ], $m->export());
 
         $m->setLimit(2, 1);
         self::assertSame(2, $m->executeCountQuery());
         self::assertSame([
             ['id' => 2, 'f1' => 'D'],
             ['id' => 3, 'f1' => 'E'],
-        ], array_values($m->export()));
+        ], $m->export());
 
         // well, this is strange, that you can actually change limit on-the-fly and then previous
         // limit is not taken into account, but most likely you will never set it multiple times