diff --git a/src/Wallabag/ApiBundle/Controller/EntryRestController.php b/src/Wallabag/ApiBundle/Controller/EntryRestController.php
index 748e5b0cc..5199d1a1a 100644
--- a/src/Wallabag/ApiBundle/Controller/EntryRestController.php
+++ b/src/Wallabag/ApiBundle/Controller/EntryRestController.php
@@ -15,6 +15,7 @@ use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
 use Symfony\Component\HttpKernel\Exception\HttpException;
 use Symfony\Component\Routing\Annotation\Route;
+use Symfony\Component\Validator\Validator\ValidatorInterface;
 use Wallabag\CoreBundle\Entity\Entry;
 use Wallabag\CoreBundle\Entity\Tag;
 use Wallabag\CoreBundle\Event\EntryDeletedEvent;
@@ -688,8 +689,15 @@ class EntryRestController extends WallabagRestController
      *
      * @return JsonResponse
      */
-    public function postEntriesAction(Request $request, EntryRepository $entryRepository, ContentProxy $contentProxy, LoggerInterface $logger, TagsAssigner $tagsAssigner, EventDispatcherInterface $eventDispatcher)
-    {
+    public function postEntriesAction(
+        Request $request,
+        EntryRepository $entryRepository,
+        ContentProxy $contentProxy,
+        LoggerInterface $logger,
+        TagsAssigner $tagsAssigner,
+        EventDispatcherInterface $eventDispatcher,
+        ValidatorInterface $validator
+    ) {
         $this->validateAuthentication();
 
         $url = $request->request->get('url');
@@ -760,6 +768,13 @@ class EntryRestController extends WallabagRestController
             $contentProxy->setDefaultEntryTitle($entry);
         }
 
+        $errors = $validator->validate($entry);
+        if (\count($errors) > 0) {
+            $errorsString = (string) $errors;
+
+            return $this->sendResponse($errorsString);
+        }
+
         $this->entityManager->persist($entry);
         $this->entityManager->flush();
 
diff --git a/src/Wallabag/CoreBundle/Controller/EntryController.php b/src/Wallabag/CoreBundle/Controller/EntryController.php
index 655217c95..a177911fa 100644
--- a/src/Wallabag/CoreBundle/Controller/EntryController.php
+++ b/src/Wallabag/CoreBundle/Controller/EntryController.php
@@ -197,6 +197,8 @@ class EntryController extends AbstractController
             // entry saved, dispatch event about it!
             $this->eventDispatcher->dispatch(new EntrySavedEvent($entry), EntrySavedEvent::NAME);
 
+            return $this->redirect($this->generateUrl('homepage'));
+        } elseif ($form->isSubmitted() && !$form->isValid()) {
             return $this->redirect($this->generateUrl('homepage'));
         }
 
diff --git a/src/Wallabag/CoreBundle/Entity/Entry.php b/src/Wallabag/CoreBundle/Entity/Entry.php
index 5a00c0dbe..efbc0c1b6 100644
--- a/src/Wallabag/CoreBundle/Entity/Entry.php
+++ b/src/Wallabag/CoreBundle/Entity/Entry.php
@@ -78,6 +78,9 @@ class Entry
      * @var string
      *
      * @Assert\NotBlank()
+     * @Assert\Url(
+     *     message = "The url '{{ value }}' is not a valid url",
+     * )
      * @ORM\Column(name="url", type="text", nullable=true)
      *
      * @Groups({"entries_for_user", "export_all"})
diff --git a/tests/Wallabag/ApiBundle/Controller/EntryRestControllerTest.php b/tests/Wallabag/ApiBundle/Controller/EntryRestControllerTest.php
index f2cd1f873..c484c4146 100644
--- a/tests/Wallabag/ApiBundle/Controller/EntryRestControllerTest.php
+++ b/tests/Wallabag/ApiBundle/Controller/EntryRestControllerTest.php
@@ -509,6 +509,25 @@ class EntryRestControllerTest extends WallabagApiTestCase
         $this->assertSame(400, $this->client->getResponse()->getStatusCode());
     }
 
+    public function testBadFormatURL()
+    {
+        $this->client->request('POST', '/api/entries.json', [
+            'url' => 'wallabagIsAwesome',
+            'tags' => 'google',
+            'title' => 'New title for my article',
+            'content' => 'my content',
+            'language' => 'de',
+            'published_at' => '2016-09-08T11:55:58+0200',
+            'authors' => 'bob,helen',
+            'public' => 1,
+        ]);
+
+        $this->assertSame(200, $this->client->getResponse()->getStatusCode());
+
+        $content = json_decode($this->client->getResponse()->getContent(), true);
+        $this->assertStringContainsString('The url \'"wallabagIsAwesome"\' is not a valid url', $content);
+    }
+
     public function testPostEntry()
     {
         $this->client->request('POST', '/api/entries.json', [
diff --git a/tests/Wallabag/CoreBundle/Controller/EntryControllerTest.php b/tests/Wallabag/CoreBundle/Controller/EntryControllerTest.php
index a6e0f395b..5d804e598 100644
--- a/tests/Wallabag/CoreBundle/Controller/EntryControllerTest.php
+++ b/tests/Wallabag/CoreBundle/Controller/EntryControllerTest.php
@@ -20,6 +20,7 @@ class EntryControllerTest extends WallabagCoreTestCase
     public const AN_URL_CONTAINING_AN_ARTICLE_WITH_IMAGE = 'https://www.lemonde.fr/judo/article/2017/11/11/judo-la-decima-de-teddy-riner_5213605_1556020.html';
     public $downloadImagesEnabled = false;
     public $url = 'https://www.lemonde.fr/pixels/article/2019/06/18/ce-qu-il-faut-savoir-sur-le-libra-la-cryptomonnaie-de-facebook_5477887_4408996.html';
+    public $wrongUrl = 'wallabagIsAwesome';
     private $entryDataTestAttribute = '[data-test="entry"]';
 
     /**
@@ -137,9 +138,7 @@ class EntryControllerTest extends WallabagCoreTestCase
 
         $crawler = $client->submit($form);
 
-        $this->assertSame(200, $client->getResponse()->getStatusCode());
-        $this->assertCount(1, $alert = $crawler->filter('form ul li')->extract(['_text']));
-        $this->assertSame('This value should not be blank.', $alert[0]);
+        $this->assertSame(302, $client->getResponse()->getStatusCode());
     }
 
     /**
@@ -423,6 +422,38 @@ class EntryControllerTest extends WallabagCoreTestCase
         $em->flush();
     }
 
+    /**
+     * @group NetworkCalls
+     */
+    public function testBadFormatURL()
+    {
+        $this->logInAs('admin');
+        $client = $this->getTestClient();
+
+        $client->getContainer()->get(Config::class)->set('store_article_headers', 1);
+
+        $crawler = $client->request('GET', '/new');
+
+        $this->assertSame(200, $client->getResponse()->getStatusCode());
+
+        $form = $crawler->filter('form[name=entry]')->form();
+
+        $data = [
+            'entry[url]' => $this->wrongUrl,
+        ];
+
+        $client->submit($form, $data);
+
+        $this->assertSame(302, $client->getResponse()->getStatusCode());
+
+        $content = $client->getContainer()
+            ->get(EntityManagerInterface::class)
+            ->getRepository(Entry::class)
+            ->findByUrlAndUserId($this->wrongUrl, $this->getLoggedInUserId());
+
+        $this->assertFalse($content);
+    }
+
     public function testArchive()
     {
         $this->logInAs('admin');