diff --git a/pandora/item/models.py b/pandora/item/models.py
index be7f3303..138b4fcd 100644
--- a/pandora/item/models.py
+++ b/pandora/item/models.py
@@ -1375,7 +1375,7 @@ class Item(models.Model):
         self.poster_height = self.poster.height
         self.poster_width = self.poster.width
         self.clear_poster_cache(self.poster.path)
-        if self.cache.get('posterRatio') != self.poster_width / self.poster_height:
+        if self.poster_width and self.cache.get('posterRatio') != self.poster_width / self.poster_height:
             self.update_cache(poster_width=self.poster_width,
                               poster_height=self.poster_height)