diff --git a/core/modules/views/src/Plugin/views/display/PathPluginBase.php b/core/modules/views/src/Plugin/views/display/PathPluginBase.php
index 0867ee2..5e62eac 100644
--- a/core/modules/views/src/Plugin/views/display/PathPluginBase.php
+++ b/core/modules/views/src/Plugin/views/display/PathPluginBase.php
@@ -462,7 +462,7 @@ protected function validatePath($path) {
     }
 
     if (!parse_url('base://' . $path)) {
-      $errors[] = $this->t('Invalid path');
+      $errors[] = $this->t('Invalid path, see <a href="@url">Spec</a>', ['@url' => 'http://www.faqs.org/rfcs/rfc3986.html']);
     }
 
     $path_sections = explode('/', $path);