diff --git a/master/bt5/vifib_slapos_rest_api_v1_test/TestTemplateItem/testVifibSlaposRestAPIV1.py b/master/bt5/vifib_slapos_rest_api_v1_test/TestTemplateItem/testVifibSlaposRestAPIV1.py
index 591b1498ff9370c19ff3b614604c1bceced6b2dc..a6f8b1a306434b3cf601fe3d45e48803744e7bab 100644
--- a/master/bt5/vifib_slapos_rest_api_v1_test/TestTemplateItem/testVifibSlaposRestAPIV1.py
+++ b/master/bt5/vifib_slapos_rest_api_v1_test/TestTemplateItem/testVifibSlaposRestAPIV1.py
@@ -74,7 +74,8 @@ class TestVifibSlaposRestAPIV1(ERP5TypeTestCase):
 
     self.connection = CustomHeaderHTTPConnection(host=self.api_netloc,
       custom_header={
-        'Access-Control-Allow-Headers': self.access_control_allow_headers
+        'Access-Control-Allow-Headers': self.access_control_allow_headers,
+        'Accept': 'application/json'
       })
     self.reindexAndUpdateLocalRoles()
     self.simulator = tempfile.mkstemp()[1]
diff --git a/master/bt5/vifib_slapos_rest_api_v1_test/bt/revision b/master/bt5/vifib_slapos_rest_api_v1_test/bt/revision
index 3cacc0b93c9c9c03a72da624ca28a09ba5c1336f..ca7bf83ac53a27a2a914bed25e1a07478dd8ef47 100644
--- a/master/bt5/vifib_slapos_rest_api_v1_test/bt/revision
+++ b/master/bt5/vifib_slapos_rest_api_v1_test/bt/revision
@@ -1 +1 @@
-12
\ No newline at end of file
+13
\ No newline at end of file