core/lib/Drupal/Component/Utility/Html.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/lib/Drupal/Component/Utility/Html.php b/core/lib/Drupal/Component/Utility/Html.php
index 860a228..2ca9c67 100644
--- a/core/lib/Drupal/Component/Utility/Html.php
+++ b/core/lib/Drupal/Component/Utility/Html.php
@@ -432,7 +432,7 @@ public static function escape($text) {
   public static function transformRelativeUrlsToAbsolute($html, $base_url) {
     assert('isset(parse_url($base_url)["scheme"])', '$base_url is absolute and hence has a scheme.');
     assert('isset(parse_url($base_url)["host"])', '$base_url is absolute and hence has a host.');
-    assert('!isset(parse_url($base_url)["path"]) || substr(parse_url($base_url)["path"], -1, 1) !== "/")', '$base_url is absolute and can have a path, and if it does, it does not have a trailing slash.');
+    assert('!isset(parse_url($base_url)["path"]) || substr(parse_url($base_url)["path"], -1, 1) !== "/"', '$base_url is absolute and can have a path, and if it does, it does not have a trailing slash.');
 
     $html_dom = Html::load($html);
     $xpath = new \DOMXpath($html_dom);