--- a/src/ldt/ldt/api/ldt/resources/segment.py	Thu Feb 21 13:10:57 2013 +0100
+++ b/src/ldt/ldt/api/ldt/resources/segment.py	Thu Feb 21 13:13:20 2013 +0100
@@ -6,8 +6,7 @@
 from ldt.ldt_utils.models import Content, Segment
 from ldt.ldt_utils.segmentserializer import SegmentSerializer
 from tastypie.constants import ALL
-from tastypie.exceptions import BadRequest
-from tastypie.http import HttpNotFound
+from tastypie.exceptions import BadRequest, NotFound
 from tastypie.resources import ModelResource
 from tastypie.utils import trailing_slash
 import logging
@@ -61,7 +60,7 @@
         try:
             page = paginator.page(int(request.GET.get('page', 1)))
         except InvalidPage:
-            raise HttpNotFound("Sorry, no results on that page.")
+            raise NotFound("Sorry, no results on that page.")
         
         objects = []
         
@@ -85,15 +84,15 @@
         returns segments about content iri_id between timecodes begin and end
         """
         if not begin:
-            return HttpNotFound("begin timecode argument is missing.")
+            raise NotFound("begin timecode argument is missing.")
         if not end:
-            return HttpNotFound("end timecode argument is missing.")
+            raise NotFound("end timecode argument is missing.")
         begin = int(begin)
         end = int(end)
         
         content = Content.objects.filter(iri_id=iri_id).select_related('media_obj', 'stat_annotation')
         if not content:
-            return HttpNotFound("Content does not exist or id is not correct.")
+            raise NotFound("Content does not exist or id is not correct.")
         content = content[0]
         
         segments = Segment.objects.filter(content=content).filter(