diff --git a/books/models.py b/books/models.py
index f9391ce..5b81ebc 100644
--- a/books/models.py
+++ b/books/models.py
@@ -9,7 +9,8 @@ class Book(models.Model):
 	
 	@property
 	def last_updated(self):
-		return Chapter.objects.filter(book=self).order_by('added')[0].added
+		chaps=Chapter.objects.filter(book=self).order_by('added')
+		return chaps[0].added if chaps else None
 	
 	def __str__(self):
 		return self.title