diff --git a/python/web/library/models.py b/python/web/library/models.py
index 1b50871..05189e1 100644
--- a/python/web/library/models.py
+++ b/python/web/library/models.py
@@ -46,22 +46,15 @@ class Book(models.Model):
 				print '%-15s: %50s' % (field[1], '')
 
 	def getid(self):
-		try:
+		if self.id:
 			return self.id.id
-		except Id.DoesNotExist:
-			return None
+		return None
 
 	def setid(self,newid):
-		try:
-			id = self.id
-			id.delete()
-			newid = Id(book=self,id=newid)
-			newid.save()
-
-		except Id.DoesNotExist:
-			id=Id(id=newid,book=self)
-			id.save()
-#		return Book.get(isbn=self.isbn)
+		if self.id:
+			self.id.delete()
+		newid = Id(book=self,id=newid)
+		newid.save()
 
 	def get_authors(self):
 		people = self.persons.all()