diff --git a/src/applications/pholio/view/PholioMockEmbedView.php b/src/applications/pholio/view/PholioMockEmbedView.php
--- a/src/applications/pholio/view/PholioMockEmbedView.php
+++ b/src/applications/pholio/view/PholioMockEmbedView.php
@@ -26,6 +26,9 @@
     if (!empty($this->images)) {
       $images_to_show = array_intersect_key(
         $this->mock->getImages(), array_flip($this->images));
+    }
+
+    if ($images_to_show) {
       foreach ($images_to_show as $image) {
         $thumbfile = $image->getFile();
         $thumbnail = $thumbfile->getThumb280x210URI();