diff --git a/app/Http/Controllers/Apis/Protected/Summit/OAuth2PresentationApiController.php b/app/Http/Controllers/Apis/Protected/Summit/OAuth2PresentationApiController.php
index 100e705a..9d4cc2b5 100644
--- a/app/Http/Controllers/Apis/Protected/Summit/OAuth2PresentationApiController.php
+++ b/app/Http/Controllers/Apis/Protected/Summit/OAuth2PresentationApiController.php
@@ -282,7 +282,7 @@ final class OAuth2PresentationApiController extends OAuth2ProtectedController
                 'type_id'                   => 'required|integer',
                 'track_id'                  => 'required|integer',
                 'attending_media'           => 'required|boolean',
-                'links'                     => 'required|url_array',
+                'links'                     => 'sometimes|url_array',
                 'extra_questions'           => 'sometimes|entity_value_array',
             ];
 
diff --git a/app/Models/Foundation/Summit/Events/Presentations/Presentation.php b/app/Models/Foundation/Summit/Events/Presentations/Presentation.php
index 84efefe6..d2fe74a5 100644
--- a/app/Models/Foundation/Summit/Events/Presentations/Presentation.php
+++ b/app/Models/Foundation/Summit/Events/Presentations/Presentation.php
@@ -69,6 +69,8 @@ class Presentation extends SummitEvent
 
     const ClassNamePresentation = 'Presentation';
 
+    const MaxAllowedLinks = 5;
+
     /**
      * @ORM\Column(name="Level", type="string")
      * @var string
diff --git a/app/Services/Model/PresentationService.php b/app/Services/Model/PresentationService.php
index 76e3af78..949da9ec 100644
--- a/app/Services/Model/PresentationService.php
+++ b/app/Services/Model/PresentationService.php
@@ -371,6 +371,15 @@ final class PresentationService
 
             if (isset($data['links'])) {
                 $presentation->clearLinks();
+
+                if(count($data['links']) > Presentation::MaxAllowedLinks){
+                    throw new ValidationException(trans(
+                        'validation_errors.PresentationService.saveOrUpdatePresentation.MaxAllowedLinks',
+                        [
+                            'max_allowed_links' => Presentation::MaxAllowedLinks
+                        ]));
+                }
+
                 foreach ($data['links'] as $link) {
                     $presentationLink = new PresentationLink();
                     $presentationLink->setName(trim($link));
diff --git a/resources/lang/en/validation_errors.php b/resources/lang/en/validation_errors.php
index 1c667f60..b9b4ab4a 100644
--- a/resources/lang/en/validation_errors.php
+++ b/resources/lang/en/validation_errors.php
@@ -83,6 +83,7 @@ return [
     'PresentationService.saveOrUpdatePresentation.notAvailableCFP' => 'type id :type_id is not a available for CFP',
     'PresentationService.saveOrUpdatePresentation.trackDontBelongToSelectionPlan' => 'track :track_id does not belongs to selection plan :selection_plan_id',
     'PresentationService.submitPresentation.limitReached' => 'You reached the limit :limit of presentations.',
+    'PresentationService.saveOrUpdatePresentation.MaxAllowedLinks' => 'max. links quantity allowed is :max_allowed_links.',
     // organizations
     'OrganizationService.addOrganization.alreadyExistName' => 'Organization name :name already exists!',
     // track tag groups