diff --git a/combo/apps/wcs/views.py b/combo/apps/wcs/views.py
index 963d89a6..9045f90e 100644
--- a/combo/apps/wcs/views.py
+++ b/combo/apps/wcs/views.py
@@ -57,7 +57,7 @@ class TrackingCodeView(View):
     def post(self, request, *args, **kwargs):
         try:
             cell = TrackingCodeInputCell.objects.get(id=request.POST['cell'])
-        except (ValueError, TrackingCodeInputCell.DoesNotExist):
+        except (KeyError, ValueError, TrackingCodeInputCell.DoesNotExist):
             return HttpResponseBadRequest('Invalid cell id')
         code = request.POST['code']