diff --git a/web/profiles/custom/os2loop/modules/os2loop_oembed/src/TwigExtension/TwigExtension.php b/web/profiles/custom/os2loop/modules/os2loop_oembed/src/TwigExtension/TwigExtension.php
index 70efc02bb..56607d4d0 100644
--- a/web/profiles/custom/os2loop/modules/os2loop_oembed/src/TwigExtension/TwigExtension.php
+++ b/web/profiles/custom/os2loop/modules/os2loop_oembed/src/TwigExtension/TwigExtension.php
@@ -180,7 +180,7 @@ private function createVideoFromUrl($text): array {
         // If oembed is not an option create iframe from a url.
         elseif ('custom' === self::ALLOWED_PROVIDERS[$url['host']]['type']) {
           $video['custom']['src'] = $text;
-          $video['iframe'] = '<iframe src="' . $text . '"></iframe>';
+          $video['iframe'] = '<iframe allow="fullscreen" src="' . $text . '"></iframe>';
         }
       }
     }