diff --git a/apps/files_sharing/templates/public.php b/apps/files_sharing/templates/public.php
index fe363ed82f521..cc98b53aacd3a 100644
--- a/apps/files_sharing/templates/public.php
+++ b/apps/files_sharing/templates/public.php
@@ -87,7 +87,7 @@
 				<?php if ($_['previewEnabled'] && substr($_['mimetype'], 0, strpos($_['mimetype'], '/')) == 'video'): ?>
 					<div id="imgframe">
 						<video tabindex="0" controls="" preload="none" style="max-width: <?php p($_['previewMaxX']); ?>px; max-height: <?php p($_['previewMaxY']); ?>px">
-							<source src="<?php p($_['downloadURL']); ?>" type="<?php p($_['mimetype']); ?>" />
+							<source src="<?php p($_['downloadURL']); ?>" />
 						</video>
 					</div>
 				<?php else: ?>