diff --git a/kfet/views.py b/kfet/views.py
index 5c927fc3..00e4f9fe 100644
--- a/kfet/views.py
+++ b/kfet/views.py
@@ -9,6 +9,7 @@ from django.contrib.auth.decorators import login_required, permission_required
 from django.contrib.auth.models import User, Permission
 from django.http import HttpResponse, JsonResponse, Http404
 from django.forms import modelformset_factory
+from django.db import IntegrityError, transaction
 from gestioncof.models import CofProfile, Clipper
 from kfet.models import Account, Checkout, Article, Settings
 from kfet.forms import *
@@ -453,7 +454,7 @@ def kpsul_perform_operations(request):
 
     # Apply all saves in a transaction to ensure database integrity
     try:
-        with transaction.atomic:
+        with transaction.atomic():
             # Saving operation group
             operationgroup.save()
             data['operationgroup'] = operationgroup.pk
@@ -463,5 +464,7 @@ def kpsul_perform_operations(request):
                 operation.group = operationgroup
                 operation.save()
                 data['operations'].append(operation.pk)
+    except IntegrityError:
+        data['errors'].append('DB error')
 
     return JsonResponse(data)