diff --git a/src/Web/Middleware/OpenSession.php b/src/Web/Middleware/OpenSession.php
index 2cafd20..b575437 100644
--- a/src/Web/Middleware/OpenSession.php
+++ b/src/Web/Middleware/OpenSession.php
@@ -24,7 +24,9 @@ public function handleRequest(Request $request, RequestHandler $requestHandler)
 
         $response = $requestHandler->handleRequest($request);
 
-        $session->commit();
+        if ($session->isLocked()) {
+            $session->commit();
+        }
 
         return $response;
     }
diff --git a/test/Unit/Web/Middleware/OpenSessionMiddlewareTest.php b/test/Unit/Web/Middleware/OpenSessionMiddlewareTest.php
index 05c45e2..50ed309 100644
--- a/test/Unit/Web/Middleware/OpenSessionMiddlewareTest.php
+++ b/test/Unit/Web/Middleware/OpenSessionMiddlewareTest.php
@@ -13,6 +13,7 @@
 use Amp\Http\Server\Session\SessionStorage;
 use Amp\Sync\LocalKeyedMutex;
 use Labrador\Test\Unit\Web\Stub\ResponseControllerStub;
+use Labrador\Test\Unit\Web\Stub\SessionDestroyingController;
 use Labrador\Web\Exception\SessionNotEnabled;
 use Labrador\Web\Middleware\OpenSession;
 use League\Uri\Http;
@@ -44,7 +45,7 @@ public function testRequestDoesNotHaveSessionThrowsException() : void {
         $this->expectExceptionMessage('The ' . OpenSession::class . ' was added to a route but no session was found on the request.');
 
         $this->subject->handleRequest(
-            new Request($this->client, 'GET', Http::createFromString('https://example.com')),
+            new Request($this->client, 'GET', Http::new('https://example.com')),
             $handler
         );
     }
@@ -57,7 +58,7 @@ public function testRequestDoesHaveSessionOpensItBeforeRequestHandler() : void {
             $this->sessionId = $generator->generate()
         );
 
-        $request = new Request($this->client, 'GET', Http::createFromString('https://example.com'));
+        $request = new Request($this->client, 'GET', Http::new('https://example.com'));
         $request->setAttribute(Session::class, $this->session);
 
         $handler = $this->getMockBuilder(RequestHandler::class)->getMock();
@@ -79,7 +80,7 @@ public function testRequestDoesHaveSessionSavesToStorageIfControllerWritesData()
             $this->sessionId = $generator->generate()
         );
 
-        $request = new Request($this->client, 'GET', Http::createFromString('https://example.com'));
+        $request = new Request($this->client, 'GET', Http::new('https://example.com'));
         $request->setAttribute(Session::class, $this->session);
 
         self::assertEmpty($this->storage->read($this->sessionId));
@@ -104,7 +105,7 @@ public function testRequestSessionIsUnlockedAfterControllerInvoked() : void {
             $this->sessionId = $generator->generate()
         );
 
-        $request = new Request($this->client, 'GET', Http::createFromString('https://example.com'));
+        $request = new Request($this->client, 'GET', Http::new('https://example.com'));
         $request->setAttribute(Session::class, $this->session);
 
         $this->subject->handleRequest($request, new ResponseControllerStub(new Response()));
@@ -112,4 +113,21 @@ public function testRequestSessionIsUnlockedAfterControllerInvoked() : void {
         self::assertFalse($this->session->isLocked());
     }
 
-}
\ No newline at end of file
+    public function testHandleSessionBeingDestroyedDoesNotThrowError() : void {
+        $this->session = new Session(
+            new LocalKeyedMutex(),
+            $this->storage = new LocalSessionStorage(),
+            $generator = new Base64UrlSessionIdGenerator(),
+            $this->sessionId = $generator->generate()
+        );
+
+        $request = new Request($this->client, 'GET', Http::new('https://example.com'));
+        $request->setAttribute(Session::class, $this->session);
+
+        $response = $this->subject->handleRequest($request, new SessionDestroyingController());
+
+        self::assertFalse($this->session->isLocked());
+        self::assertSame('Session destroyed', $response->getBody()->read());
+    }
+
+}
diff --git a/test/Unit/Web/Stub/SessionDestroyingController.php b/test/Unit/Web/Stub/SessionDestroyingController.php
new file mode 100644
index 0000000..2bdecb6
--- /dev/null
+++ b/test/Unit/Web/Stub/SessionDestroyingController.php
@@ -0,0 +1,24 @@
+<?php declare(strict_types=1);
+
+namespace Labrador\Test\Unit\Web\Stub;
+
+use Amp\Http\Server\Request;
+use Amp\Http\Server\Response;
+use Amp\Http\Server\Session\Session;
+use Labrador\Web\Controller\Controller;
+use Labrador\Web\Controller\SelfDescribingController;
+use PHPUnit\Framework\Assert;
+
+class SessionDestroyingController extends SelfDescribingController {
+
+    public function handleRequest(Request $request) : Response {
+        $session = $request->getAttribute(Session::class);
+
+        Assert::assertInstanceOf(Session::class, $session);
+
+        $session->destroy();
+
+        return new Response(body: 'Session destroyed');
+    }
+
+}