diff --git a/modules/tide_site_preview/src/Plugin/Block/PreviewLinksBlock.php b/modules/tide_site_preview/src/Plugin/Block/PreviewLinksBlock.php
index 3de2470..70d421c 100644
--- a/modules/tide_site_preview/src/Plugin/Block/PreviewLinksBlock.php
+++ b/modules/tide_site_preview/src/Plugin/Block/PreviewLinksBlock.php
@@ -235,6 +235,11 @@ protected function getCurrentNode() : ?NodeInterface {
         $node = NULL;
       }
     }
+
+    if (!($node instanceof NodeInterface)) {
+      $node = NULL;
+    }
+
     $this->currentNode = $node;
 
     return $this->currentNode;