diff --git a/README.md b/README.md
index fbae4da..9ef41b9 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ There are some functionalities that are not supported by Microsoft Access in a P
 
 ## OS Requirements
 - Microsoft Access Database Engine Redistributable ([2010](https://www.microsoft.com/download/details.aspx?id=13255) or [2016](https://www.microsoft.com/download/details.aspx?id=54920)).
-- Register a **DSN** in **ODBC Data Source Administrator** (odbcad32.exe).
+- Register a **DSN** in **ODBC Data Source Administrator** `odbcad32.exe`.
 
 ## Installation
 
diff --git a/src/Doctrine/DBAL/Driver/MicrosoftAccess/Driver.php b/src/Doctrine/DBAL/Driver/MicrosoftAccess/Driver.php
index 28814a9..05ee3d6 100644
--- a/src/Doctrine/DBAL/Driver/MicrosoftAccess/Driver.php
+++ b/src/Doctrine/DBAL/Driver/MicrosoftAccess/Driver.php
@@ -23,7 +23,7 @@ public function connect(
         $password = null,
         array $driverOptions = []
     ): \Doctrine\DBAL\Driver\Connection {
-        $this->assertRequiredParameters($driverOptions);
+        $this->assertRequiredDriverOptions($driverOptions);
 
         try {
             $conn = new PDOConnection(
@@ -62,49 +62,25 @@ public function getSchemaManager(Connection $conn): AbstractSchemaManager
         return new MicrosoftAccessSchemaManager($conn, $this->odbcConnection);
     }
 
-    /**
-     * @param array $driverOptions
-     * @throws \Exception
-     */
-    private function assertRequiredParameters(array $driverOptions): void
+    private function assertRequiredDriverOptions(array $driverOptions): void
     {
-        $dsn = $this->getDsn($driverOptions);
-
-        if ($dsn === null) {
+        if (false === \array_key_exists('dsn', $driverOptions)) {
             throw new Exception\InvalidArgumentException("The driver option 'dsn' is mandatory");
         }
     }
 
-    /**
-     * Get the DSN for the PDO connection.
-     *
-     * @param array $driverOptions
-     * @return string
-     */
     protected function constructPdoDsn(array $driverOptions): string
     {
         return 'odbc:' . $this->getDsn($driverOptions);
     }
 
-    /**
-     * Get the DSN for the ODBC connection.
-     *
-     * @param array $driverOptions
-     * @return string
-     */
     protected function constructOdbcDsn(array $driverOptions): string
     {
         return $this->getDsn($driverOptions);
     }
 
-    /**
-     * Get the DSN by the driver's parameters and options
-     *
-     * @param array $driverOptions
-     * @return string|null
-     */
-    private function getDsn(array $driverOptions): ?string
+    private function getDsn(array $driverOptions): string
     {
-        return $driverOptions['dsn'] ?? null;
+        return $driverOptions['dsn'];
     }
 }
diff --git a/src/Doctrine/DBAL/Platforms/MicrosoftAccessPlatform.php b/src/Doctrine/DBAL/Platforms/MicrosoftAccessPlatform.php
index 4f5ce59..11adaed 100644
--- a/src/Doctrine/DBAL/Platforms/MicrosoftAccessPlatform.php
+++ b/src/Doctrine/DBAL/Platforms/MicrosoftAccessPlatform.php
@@ -8,49 +8,30 @@
 
 final class MicrosoftAccessPlatform extends SQLServer2012Platform
 {
-    /** @link \Doctrine\DBAL\Platforms\AbstractPlatform::getName */
+    /**
+     * {@inheritDoc}
+     */
     public function getName(): string
     {
         return 'msaccess';
     }
 
-    /** @link \Doctrine\DBAL\Platforms\AbstractPlatform::supportsForeignKeyConstraints */
+    /**
+     * {@inheritDoc}
+     */
     public function supportsForeignKeyConstraints()
     {
         return false;
     }
 
-    /** @link \Doctrine\DBAL\Platforms\SQLServer2005Platform::supportsLimitOffset */
+    /**
+     * {@inheritDoc}
+     */
     public function supportsLimitOffset()
     {
         return false;
     }
 
-    /** @link \Doctrine\DBAL\Platforms\AbstractPlatform::initializeDoctrineTypeMappings */
-    protected function initializeDoctrineTypeMappings()
-    {
-        $this->doctrineTypeMapping = [
-            'bit' => 'boolean',
-            'byte' => 'boolean',
-            'counter' => 'bigint',
-            'currency' => 'decimal',
-            'datetime' => 'datetime',
-            'double' => 'float',
-            'integer' => 'integer',
-            'longbinary' => 'binary',
-            'longchar' => 'text',
-            'real' => 'float',
-            'smallint' => 'smallint',
-            'varchar' => 'string',
-        ];
-    }
-
-    /** @link \Doctrine\DBAL\Platforms\AbstractPlatform::getReservedKeywordsClass */
-    protected function getReservedKeywordsClass(): string
-    {
-        return MicrosoftAccessKeywords::class;
-    }
-
     /**
      * {@inheritDoc}
      */
@@ -74,4 +55,33 @@ public function getTimeFormatString()
     {
         return 'H:i:s';
     }
+
+    /**
+     * {@inheritDoc}
+     */
+    protected function initializeDoctrineTypeMappings()
+    {
+        $this->doctrineTypeMapping = [
+            'bit' => 'boolean',
+            'byte' => 'boolean',
+            'counter' => 'bigint',
+            'currency' => 'decimal',
+            'datetime' => 'datetime',
+            'double' => 'float',
+            'integer' => 'integer',
+            'longbinary' => 'binary',
+            'longchar' => 'text',
+            'real' => 'float',
+            'smallint' => 'smallint',
+            'varchar' => 'string',
+        ];
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    protected function getReservedKeywordsClass(): string
+    {
+        return MicrosoftAccessKeywords::class;
+    }
 }
diff --git a/tests/BaseTest.php b/tests/BaseTest.php
index d87e2c9..796e720 100644
--- a/tests/BaseTest.php
+++ b/tests/BaseTest.php
@@ -19,7 +19,6 @@ public function connections(): \Iterator
 
         $params = [
             'driverClass' => Driver::class,
-            'dsn' => $this->dsn(),
             'driverOptions' => $this->driverOptions(),
         ];
 
@@ -52,7 +51,9 @@ protected function dsn(): string
 
     protected function driverOptions(): array
     {
-        return [];
+        return [
+            'dsn' => $this->dsn(),
+        ];
     }
 
     private function isMicrosoftWindows(): bool
diff --git a/tests/Doctrine/DBAL/Driver/MicrosoftAccess/StatementTest.php b/tests/Doctrine/DBAL/Driver/MicrosoftAccess/StatementTest.php
index bbb1a42..49ae3c9 100644
--- a/tests/Doctrine/DBAL/Driver/MicrosoftAccess/StatementTest.php
+++ b/tests/Doctrine/DBAL/Driver/MicrosoftAccess/StatementTest.php
@@ -56,8 +56,11 @@ protected function dsn(): string
 
     protected function driverOptions(): array
     {
-        return [
-            'charset' => 'UTF-8',
-        ];
+        return \array_merge(
+            parent::driverOptions(),
+            [
+                'charset' => 'UTF-8',
+            ],
+        );
     }
 }