diff --git a/CHANGELOG.md b/CHANGELOG.md
index 49955f6c..b2dff994 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,8 @@
 
 ## Unreleased
 
-- Added missing `capture-soft-fails` config schema option (#417)
+- Add missing `capture-soft-fails` option to the XSD schema for the XML config (#417)
+- Fix regression that send PII even when the `send_default_pii` option is off (#425)
 
 ## 4.0.0 (2021-01-19)
 
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index f1ea7310..cde27129 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -82,7 +82,7 @@ parameters:
 
 		-
 			message: "#^Instantiated class Symfony\\\\Component\\\\HttpKernel\\\\Event\\\\GetResponseEvent not found\\.$#"
-			count: 6
+			count: 8
 			path: tests/EventListener/RequestListenerTest.php
 
 		-
diff --git a/src/EventListener/RequestListener.php b/src/EventListener/RequestListener.php
index 13cb397c..23058e2c 100644
--- a/src/EventListener/RequestListener.php
+++ b/src/EventListener/RequestListener.php
@@ -51,6 +51,12 @@ public function handleKernelRequestEvent(RequestListenerRequestEvent $event): vo
             return;
         }
 
+        $client = $this->hub->getClient();
+
+        if (null === $client || !$client->getOptions()->shouldSendDefaultPii()) {
+            return;
+        }
+
         $token = null;
         $userData = UserDataBag::createFromUserIpAddress($event->getRequest()->getClientIp());
 
diff --git a/tests/EventListener/RequestListenerTest.php b/tests/EventListener/RequestListenerTest.php
index 3d71b4f7..e2d67b97 100644
--- a/tests/EventListener/RequestListenerTest.php
+++ b/tests/EventListener/RequestListenerTest.php
@@ -6,7 +6,9 @@
 
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;
+use Sentry\ClientInterface;
 use Sentry\Event;
+use Sentry\Options;
 use Sentry\SentryBundle\EventListener\RequestListener;
 use Sentry\State\HubInterface;
 use Sentry\State\Scope;
@@ -53,15 +55,19 @@ protected function setUp(): void
      *
      * @param GetResponseEvent|RequestEvent $requestEvent
      */
-    public function testHandleKernelRequestEvent($requestEvent, ?TokenInterface $token, UserDataBag $expectedUser): void
+    public function testHandleKernelRequestEvent($requestEvent, ?ClientInterface $client, ?TokenInterface $token, ?UserDataBag $expectedUser): void
     {
         $scope = new Scope();
 
-        $this->tokenStorage->expects($this->once())
+        $this->hub->expects($this->any())
+            ->method('getClient')
+            ->willReturn($client);
+
+        $this->tokenStorage->expects($this->any())
             ->method('getToken')
             ->willReturn($token);
 
-        $this->hub->expects($this->once())
+        $this->hub->expects($this->any())
             ->method('configureScope')
             ->willReturnCallback(static function (callable $callback) use ($scope): void {
                 $callback($scope);
@@ -83,12 +89,35 @@ public function handleKernelRequestEventForSymfonyVersionLowerThan43DataProvider
             return;
         }
 
+        yield 'event.requestType != MASTER_REQUEST' => [
+            new GetResponseEvent(
+                $this->createMock(HttpKernelInterface::class),
+                new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
+                HttpKernelInterface::SUB_REQUEST
+            ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
+            null,
+            null,
+        ];
+
+        yield 'options.send_default_pii = FALSE' => [
+            new GetResponseEvent(
+                $this->createMock(HttpKernelInterface::class),
+                new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
+                HttpKernelInterface::MASTER_REQUEST
+            ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => false])),
+            null,
+            null,
+        ];
+
         yield 'token IS NULL' => [
             new GetResponseEvent(
                 $this->createMock(HttpKernelInterface::class),
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             null,
             UserDataBag::createFromUserIpAddress('127.0.0.1'),
         ];
@@ -99,6 +128,7 @@ public function handleKernelRequestEventForSymfonyVersionLowerThan43DataProvider
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             new class() extends AbstractToken {
                 public function __construct()
                 {
@@ -121,6 +151,7 @@ public function getCredentials()
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             new class() extends AbstractToken {
                 public function __construct()
                 {
@@ -143,6 +174,7 @@ public function getCredentials()
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             new class() extends AbstractToken {
                 public function __construct()
                 {
@@ -166,6 +198,7 @@ public function getCredentials()
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             new class() extends AbstractToken {
                 public function __construct()
                 {
@@ -213,6 +246,7 @@ public function getCredentials()
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             new class() extends AbstractToken {
                 public function __construct()
                 {
@@ -245,12 +279,35 @@ public function handleKernelRequestEventForSymfonyVersionAtLeast43DataProvider()
             return;
         }
 
+        yield 'event.requestType != MASTER_REQUEST' => [
+            new RequestEvent(
+                $this->createMock(HttpKernelInterface::class),
+                new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
+                HttpKernelInterface::SUB_REQUEST
+            ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
+            null,
+            null,
+        ];
+
+        yield 'options.send_default_pii = FALSE' => [
+            new RequestEvent(
+                $this->createMock(HttpKernelInterface::class),
+                new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
+                HttpKernelInterface::MASTER_REQUEST
+            ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => false])),
+            null,
+            null,
+        ];
+
         yield 'token IS NULL' => [
             new RequestEvent(
                 $this->createMock(HttpKernelInterface::class),
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             null,
             UserDataBag::createFromUserIpAddress('127.0.0.1'),
         ];
@@ -261,6 +318,7 @@ public function handleKernelRequestEventForSymfonyVersionAtLeast43DataProvider()
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             new class() extends AbstractToken {
                 public function __construct()
                 {
@@ -283,6 +341,7 @@ public function getCredentials()
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             new class() extends AbstractToken {
                 public function __construct()
                 {
@@ -305,6 +364,7 @@ public function getCredentials()
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             new class() extends AbstractToken {
                 public function __construct()
                 {
@@ -328,6 +388,7 @@ public function getCredentials()
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             new class() extends AbstractToken {
                 public function __construct()
                 {
@@ -375,6 +436,7 @@ public function getCredentials()
                 new Request([], [], [], [], [], ['REMOTE_ADDR' => '127.0.0.1']),
                 HttpKernelInterface::MASTER_REQUEST
             ),
+            $this->getMockedClientWithOptions(new Options(['send_default_pii' => true])),
             new class() extends AbstractToken {
                 public function __construct()
                 {
@@ -511,4 +573,14 @@ static function () {
             ],
         ];
     }
+
+    private function getMockedClientWithOptions(Options $options): ClientInterface
+    {
+        $client = $this->createMock(ClientInterface::class);
+        $client->expects($this->any())
+            ->method('getOptions')
+            ->willReturn($options);
+
+        return $client;
+    }
 }