diff --git a/src/Discussion/IdWithSlugDriver.php b/src/Discussion/IdWithSlugDriver.php
index 85690883a..e9685736a 100644
--- a/src/Discussion/IdWithSlugDriver.php
+++ b/src/Discussion/IdWithSlugDriver.php
@@ -1,16 +1,20 @@
 <?php
 
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
 
 namespace Flarum\Discussion;
 
-
 use Flarum\Database\AbstractModel;
 use Flarum\Http\SlugDriverInterface;
 use Flarum\User\User;
 
 class IdWithSlugDriver implements SlugDriverInterface
 {
-
     public function toSlug(AbstractModel $instance): string
     {
         return $instance->id.(trim($instance->slug) ? '-'.$instance->slug : '');
@@ -22,6 +26,7 @@ class IdWithSlugDriver implements SlugDriverInterface
             $slug_array = explode('-', $slug);
             $slug = $slug_array[0];
         }
+
         return Discussion::where('id', $slug)->whereVisibleTo($actor)->firstOrFail();
     }
 }
diff --git a/src/Forum/Content/Discussion.php b/src/Forum/Content/Discussion.php
index 780d41631..0fc9b72e4 100644
--- a/src/Forum/Content/Discussion.php
+++ b/src/Forum/Content/Discussion.php
@@ -10,7 +10,6 @@
 namespace Flarum\Forum\Content;
 
 use Flarum\Api\Client;
-use Flarum\Discussion\Discussion as FlarumDiscussion;
 use Flarum\Frontend\Document;
 use Flarum\Http\Exception\RouteNotFoundException;
 use Flarum\Http\UrlGenerator;
diff --git a/src/Http/HttpServiceProvider.php b/src/Http/HttpServiceProvider.php
index 919f46a16..fc2c0bc39 100644
--- a/src/Http/HttpServiceProvider.php
+++ b/src/Http/HttpServiceProvider.php
@@ -33,7 +33,7 @@ class HttpServiceProvider extends AbstractServiceProvider
             return new Middleware\CheckCsrfToken($app->make('flarum.http.csrfExemptPaths'));
         });
 
-        $this->app->singleton('flarum.http.slugDrivers', function() {
+        $this->app->singleton('flarum.http.slugDrivers', function () {
             return [
                 Discussion::class => [
                     'default' => IdWithSlugDriver::class
@@ -44,12 +44,12 @@ class HttpServiceProvider extends AbstractServiceProvider
             ];
         });
 
-        $this->app->singleton('flarum.http.selectedSlugDrivers', function() {
+        $this->app->singleton('flarum.http.selectedSlugDrivers', function () {
             $settings = $this->app->make(SettingsRepositoryInterface::class);
 
             $compiledDrivers = [];
 
-            foreach($this->app->make('flarum.http.slugDrivers') as $resourceClass => $resourceDrivers) {
+            foreach ($this->app->make('flarum.http.slugDrivers') as $resourceClass => $resourceDrivers) {
                 $driverClass = $resourceDrivers[$settings->get("slug_driver_$resourceClass", 'default')];
                 $compiledDrivers[$resourceClass] = $this->app->make($driverClass);
             }
@@ -57,36 +57,37 @@ class HttpServiceProvider extends AbstractServiceProvider
             return $compiledDrivers;
         });
 
-        $this->app->singleton('flarum.http.resourceUrlGenerators', function() {
+        $this->app->singleton('flarum.http.resourceUrlGenerators', function () {
             $slugManager = $this->app->make(SlugManager::class);
 
             return [
-                Discussion::class => function(UrlGenerator $urlGenerator, Discussion $discussion) use ($slugManager) {
+                Discussion::class => function (UrlGenerator $urlGenerator, Discussion $discussion) use ($slugManager) {
                     return $urlGenerator->to('forum')->route('discussion', [
                         'id' => $slugManager->toResource(Discussion::class)->toSlug($discussion)
                     ]);
                 },
-                Post::class => function(UrlGenerator $urlGenerator, Post $post) use ($slugManager) {
+                Post::class => function (UrlGenerator $urlGenerator, Post $post) use ($slugManager) {
                     return $urlGenerator->to('forum')->route('user', [
                         'id' => $slugManager->toResource(Discussion::class)->toSlug($post->discussion),
                         'near' => $post->id,
                     ]);
                 },
-                User::class => function(UrlGenerator $urlGenerator, User $user) use ($slugManager) {
+                User::class => function (UrlGenerator $urlGenerator, User $user) use ($slugManager) {
                     return $urlGenerator->to('forum')->route('user', [
                         'id' => $slugManager->toResource(User::class)->toSlug($user)
                     ]);
                 },
             ];
         });
-        $this->app->bind(SlugManager::class, function() {
+        $this->app->bind(SlugManager::class, function () {
             return new SlugManager($this->app->make('flarum.http.selectedSlugDrivers'));
         });
 
-        $this->app->bind(UrlGenerator::class, function() {
+        $this->app->bind(UrlGenerator::class, function () {
             return new UrlGenerator(
                 $this->app->make(Application::class),
-                $this->app->make('flarum.http.resourceUrlGenerators'));
+                $this->app->make('flarum.http.resourceUrlGenerators')
+            );
         });
     }
 }
diff --git a/src/Http/SlugDriverInterface.php b/src/Http/SlugDriverInterface.php
index 822b3a29a..84d3a621e 100644
--- a/src/Http/SlugDriverInterface.php
+++ b/src/Http/SlugDriverInterface.php
@@ -1,9 +1,14 @@
 <?php
 
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
 
 namespace Flarum\Http;
 
-
 use Flarum\Database\AbstractModel;
 use Flarum\User\User;
 
diff --git a/src/Http/SlugManager.php b/src/Http/SlugManager.php
index e9810e635..71ec28a85 100644
--- a/src/Http/SlugManager.php
+++ b/src/Http/SlugManager.php
@@ -9,7 +9,6 @@
 
 namespace Flarum\Http;
 
-
 use Illuminate\Support\Arr;
 
 class SlugManager
diff --git a/src/Http/UrlGenerator.php b/src/Http/UrlGenerator.php
index f05a6a4bf..e17f1bb33 100644
--- a/src/Http/UrlGenerator.php
+++ b/src/Http/UrlGenerator.php
@@ -68,7 +68,7 @@ class UrlGenerator
     }
 
     /**
-     * Generate a URL to an instance of a resource
+     * Generate a URL to an instance of a resource.
      *
      * @param string $resourceClass
      * @param AbstractModel $instance
diff --git a/src/User/UsernameSlugDriver.php b/src/User/UsernameSlugDriver.php
index 25fc644e1..14f1cc83f 100644
--- a/src/User/UsernameSlugDriver.php
+++ b/src/User/UsernameSlugDriver.php
@@ -1,15 +1,19 @@
 <?php
 
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
 
 namespace Flarum\User;
 
-
 use Flarum\Database\AbstractModel;
 use Flarum\Http\SlugDriverInterface;
 
 class UsernameSlugDriver implements SlugDriverInterface
 {
-
     public function toSlug(AbstractModel $instance): string
     {
         return $instance->username;
diff --git a/tests/integration/api/discussions/ShowTest.php b/tests/integration/api/discussions/ShowTest.php
index 6f25e2e44..b4300a34a 100644
--- a/tests/integration/api/discussions/ShowTest.php
+++ b/tests/integration/api/discussions/ShowTest.php
@@ -77,7 +77,7 @@ class ShowTest extends TestCase
             $this->request('GET', '/api/discussions/1-fdsafdsajfsakf', [
                 'authenticatedAs' => 2,
             ])->withQueryParams([
-                "bySlug" => true
+                'bySlug' => true
             ])
         );
 
diff --git a/tests/integration/api/users/CreateTest.php b/tests/integration/api/users/CreateTest.php
index 87100e2c4..65e821ab7 100644
--- a/tests/integration/api/users/CreateTest.php
+++ b/tests/integration/api/users/CreateTest.php
@@ -57,7 +57,7 @@ class CreateTest extends TestCase
         $this->assertEquals(422, $response->getStatusCode());
 
         // The response body should contain details about the failed validation
-        $body = (string)$response->getBody();
+        $body = (string) $response->getBody();
         $this->assertJson($body);
         $this->assertEquals([
             'errors' => [
diff --git a/tests/integration/api/users/ShowTest.php b/tests/integration/api/users/ShowTest.php
index 788d63909..afaff63d5 100644
--- a/tests/integration/api/users/ShowTest.php
+++ b/tests/integration/api/users/ShowTest.php
@@ -1,9 +1,14 @@
 <?php
 
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
 
 namespace Flarum\Tests\integration\api\users;
 
-
 use Flarum\Tests\integration\RetrievesAuthorizedUsers;
 use Flarum\Tests\integration\TestCase;
 
@@ -55,7 +60,7 @@ class ShowTest extends TestCase
             $this->request('GET', '/api/users/normal', [
                 'authenticatedAs' => 1,
             ])->withQueryParams([
-                "bySlug" => true
+                'bySlug' => true
             ])
         );
 
@@ -81,7 +86,7 @@ class ShowTest extends TestCase
     {
         $response = $this->send(
             $this->request('GET', '/api/users/2')->withQueryParams([
-                "bySlug" => true
+                'bySlug' => true
             ])
         );
 
@@ -111,7 +116,7 @@ class ShowTest extends TestCase
             $this->request('GET', '/api/users/normal', [
                 'authenticatedAs' => 2,
             ])->withQueryParams([
-                "bySlug" => true
+                'bySlug' => true
             ])
         );
 
@@ -141,7 +146,7 @@ class ShowTest extends TestCase
             $this->request('GET', '/api/users/admin', [
                 'authenticatedAs' => 2,
             ])->withQueryParams([
-                "bySlug" => true
+                'bySlug' => true
             ])
         );
 
@@ -173,7 +178,7 @@ class ShowTest extends TestCase
             $this->request('GET', '/api/users/admin', [
                 'authenticatedAs' => 2,
             ])->withQueryParams([
-                "bySlug" => true
+                'bySlug' => true
             ])
         );