diff --git a/src/Store/DoctrineDbalStore.php b/src/Store/DoctrineDbalStore.php
index c700da87b..82f9241a6 100644
--- a/src/Store/DoctrineDbalStore.php
+++ b/src/Store/DoctrineDbalStore.php
@@ -8,6 +8,7 @@
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Query\QueryBuilder;
 use Doctrine\DBAL\Schema\Schema;
+use Doctrine\DBAL\Types\Type;
 use Doctrine\DBAL\Types\Types;
 use Patchlevel\EventSourcing\Aggregate\AggregateRoot;
 use Patchlevel\EventSourcing\EventBus\HeaderNotFound;
@@ -30,7 +31,6 @@ public function __construct(
         private readonly EventSerializer $serializer,
         private readonly AggregateRootRegistry $aggregateRootRegistry,
         private readonly string $storeTableName = 'eventstore',
-        private readonly int $batch = 1000,
     ) {
     }
 
@@ -118,7 +118,14 @@ public function save(Message ...$messages): void
     {
         $this->connection->transactional(
             function (Connection $connection) use ($messages): void {
+                $booleanType = Type::getType(Types::BOOLEAN);
+                $jsonType = Type::getType(Types::JSON);
+                $dateTimeType = Type::getType(Types::DATETIMETZ_IMMUTABLE);
+
+                $parameters = [];
                 $placeholders = [];
+
+                /** @var array<int, Type> $types */
                 $types = [];
 
                 $columns = [
@@ -134,7 +141,6 @@ function (Connection $connection) use ($messages): void {
                 ];
 
                 $columnsLength = count($columns);
-
                 $placeholder = implode(', ', array_fill(0, count($columns), '?'));
 
                 foreach ($messages as $position => $message) {
@@ -154,12 +160,12 @@ function (Connection $connection) use ($messages): void {
                         throw new MissingDataForStorage($e->name, $e);
                     }
 
-                    $offset = $position * $columnsLength;
+                    $offset = (int)$position * $columnsLength;
 
-                    $types[$offset + 5] = Types::DATETIMETZ_IMMUTABLE;
-                    $types[$offset + 6] = Types::BOOLEAN;
-                    $types[$offset + 7] = Types::BOOLEAN;
-                    $types[$offset + 8] = Types::JSON;
+                    $types[$offset + 5] = $dateTimeType;
+                    $types[$offset + 6] = $booleanType;
+                    $types[$offset + 7] = $booleanType;
+                    $types[$offset + 8] = $jsonType;
 
                     $placeholders[] = $placeholder;
                 }
@@ -180,22 +186,6 @@ function (Connection $connection) use ($messages): void {
         );
     }
 
-    /**
-     * @param string[] $fields
-     *
-     * @return string[]
-     */
-    private function placeholder(array $fields): array
-    {
-        $placeholders = [];
-
-        foreach ($fields as $field) {
-            $placeholders[] = ':' . $field;
-        }
-
-        return $placeholders;
-    }
-
     /**
      * @param Closure():ClosureReturn $function
      *
diff --git a/tests/Unit/Store/DoctrineDbalStoreTest.php b/tests/Unit/Store/DoctrineDbalStoreTest.php
index 6daa54eda..162cf7018 100644
--- a/tests/Unit/Store/DoctrineDbalStoreTest.php
+++ b/tests/Unit/Store/DoctrineDbalStoreTest.php
@@ -12,6 +12,7 @@
 use Doctrine\DBAL\Query\QueryBuilder;
 use Doctrine\DBAL\Result;
 use Doctrine\DBAL\Statement;
+use Doctrine\DBAL\Types\Type;
 use Doctrine\DBAL\Types\Types;
 use EmptyIterator;
 use Patchlevel\EventSourcing\EventBus\Message;
@@ -191,27 +192,14 @@ public function testSaveWithOneEvent(): void
 
         $innerMockedConnection = $this->prophesize(Connection::class);
 
-        $platform = $this->prophesize(AbstractPlatform::class);
-        $innerMockedConnection->getDatabasePlatform()->willReturn($platform->reveal());
-
-        $innerMockedConnection->insert(
-            'eventstore',
-            [
-                'aggregate' => 'profile',
-                'aggregate_id' => '1',
-                'playhead' => 1,
-                'event' => 'profile_created',
-                'payload' => '',
-                'recorded_on' => $recordedOn,
-                'new_stream_start' => false,
-                'archived' => false,
-                'custom_headers' => [],
-            ],
+        $innerMockedConnection->executeStatement(
+            "INSERT INTO eventstore (aggregate, aggregate_id, playhead, event, payload, recorded_on, new_stream_start, archived, custom_headers) VALUES\n(?, ?, ?, ?, ?, ?, ?, ?, ?)",
+            ['profile', '1', 1, 'profile_created', '', $recordedOn, false, false, []],
             [
-                'recorded_on' => 'datetimetz_immutable',
-                'custom_headers' => 'json',
-                'archived' => Types::BOOLEAN,
-                'new_stream_start' => Types::BOOLEAN,
+                5 => Type::getType(Types::DATETIMETZ_IMMUTABLE),
+                6 => Type::getType(Types::BOOLEAN),
+                7 => Type::getType(Types::BOOLEAN),
+                8 => Type::getType(Types::JSON),
             ],
         )->shouldBeCalledOnce();