diff --git a/oxdata/poster/models.py b/oxdata/poster/models.py
index c16d0b4..11be8ae 100644
--- a/oxdata/poster/models.py
+++ b/oxdata/poster/models.py
@@ -119,7 +119,8 @@ class PosterCache(models.Model):
                 self.status = "invalid image"
                 self.image.delete()
                 self.save()
-        return self.image
+        if not failed:
+            return self.image
 
 def get_poster_urls(m):
     def addPoster(url, site, site_id):