diff --git a/application/forms/Navigation/NavigationItemForm.php b/application/forms/Navigation/NavigationItemForm.php
index 1bd7eb97f..7d6bd97e0 100644
--- a/application/forms/Navigation/NavigationItemForm.php
+++ b/application/forms/Navigation/NavigationItemForm.php
@@ -97,7 +97,10 @@ class NavigationItemForm extends Form
     public function getValues($suppressArrayNotation = false)
     {
         $values = parent::getValues($suppressArrayNotation);
-        if (isset($values['url']) && $values['url']) {
+        // The regex here specifically matches the port-macro as it's the only one preventing Url::fromPath() from
+        // successfully parsing the given url. Any other macro such as for the scheme or host simply gets identified
+        // as path which is just fine in this case.
+        if (isset($values['url']) && $values['url'] && !preg_match('~://.+:(\$.+\$)~', $values['url'])) {
             $url = Url::fromPath($values['url']);
             if ($url->getBasePath() === $this->getRequest()->getBasePath()) {
                 $values['url'] = $url->getRelativeUrl();