diff --git a/app/views/portlets/render_public/_imagecontent.html.haml b/app/views/portlets/render_public/_imagecontent.html.haml
index bb6b8e1..6be9e2d 100644
--- a/app/views/portlets/render_public/_imagecontent.html.haml
+++ b/app/views/portlets/render_public/_imagecontent.html.haml
@@ -76,4 +76,5 @@
 =raw '</div>' if style
 
 -if input.image_file and input.image_file.photograph
+  -@page_images_credits = @page_images_credits || []
   -@page_images_credits << input.image_file.photograph
\ No newline at end of file