diff --git a/imagedb/views.py b/imagedb/views.py
index b0a11d7f845edca73811eec9998c379b74b7c489..102311343808b16e6744f04cd69a842eb8d7c4d3 100644
--- a/imagedb/views.py
+++ b/imagedb/views.py
@@ -19,7 +19,7 @@ class NispRawFrameFilterSet(ModelFilterSet):
   class Meta:
     model = NispRawFrame
     fields = [f.name for f in NispRawFrame._meta.get_fields() 
-              if hasattr(f, 'serialize') and f.serialize]
+              if not hasattr(f, 'subfields')]
     
   
 class NispRawFrameViewSet(viewsets.ReadOnlyModelViewSet):