diff --git a/lib/private/Setup.php b/lib/private/Setup.php
index 795c8cabce..a88be0a014 100644
--- a/lib/private/Setup.php
+++ b/lib/private/Setup.php
@@ -528,7 +528,7 @@ class Setup {
 			$content .= "\n  Options -MultiViews";
 			$content .= "\n  RewriteRule ^core/js/oc.js$ index.php [PT,E=PATH_INFO:$1]";
 			$content .= "\n  RewriteRule ^core/preview.png$ index.php [PT,E=PATH_INFO:$1]";
-			$content .= "\n  RewriteCond %{REQUEST_FILENAME} !\\.(css|js|svg|gif|png|html|ttf|woff2?|ico|jpg|jpeg|map)$";
+			$content .= "\n  RewriteCond %{REQUEST_FILENAME} !\\.(css|js|svg|gif|png|html|ttf|woff2?|ico|jpg|jpeg|map|webm)$";
 			$content .= "\n  RewriteCond %{REQUEST_FILENAME} !core/img/favicon.ico$";
 			$content .= "\n  RewriteCond %{REQUEST_FILENAME} !core/img/manifest.json$";
 			$content .= "\n  RewriteCond %{REQUEST_FILENAME} !/remote.php";