diff --git a/product/ERP5OOo/tests/testDms.py b/product/ERP5OOo/tests/testDms.py
index a777b646fae611f65d0d298ca5e3f0d9d589860a..cc8840476cf3533af3c5cf1be5148cb2c1f96209 100644
--- a/product/ERP5OOo/tests/testDms.py
+++ b/product/ERP5OOo/tests/testDms.py
@@ -118,7 +118,8 @@ class TestDocument(ERP5TypeTestCase, ZopeTestCase.Functional):
     default_pref.setPreferredOoodocServerPortNumber(conversion_server_host[1])
     default_pref.setPreferredDocumentFileNameRegularExpression(FILE_NAME_REGULAR_EXPRESSION)
     default_pref.setPreferredDocumentReferenceRegularExpression(REFERENCE_REGULAR_EXPRESSION)
-    default_pref.enable()
+    if default_pref.getPreferenceState() != 'global':
+      default_pref.enable()
 
   def getDocumentModule(self):
     return getattr(self.getPortal(),'document_module')
@@ -784,7 +785,8 @@ class TestDocumentWithSecurity(ERP5TypeTestCase):
     default_pref.setPreferredOoodocServerPortNumber(conversion_server_host[1])
     default_pref.setPreferredDocumentFileNameRegularExpression(FILE_NAME_REGULAR_EXPRESSION)
     default_pref.setPreferredDocumentReferenceRegularExpression(REFERENCE_REGULAR_EXPRESSION)
-    default_pref.enable()
+    if default_pref.getPreferenceState() != 'global':
+      default_pref.enable()
     transaction.commit()
     self.tic()
 
diff --git a/product/ERP5OOo/tests/testIngestion.py b/product/ERP5OOo/tests/testIngestion.py
index aa1bce1005bd29e41d0a97b7a8dbbff10c52811d..bdb28c0d33e4b472055295b75e1a09d97808e90f 100644
--- a/product/ERP5OOo/tests/testIngestion.py
+++ b/product/ERP5OOo/tests/testIngestion.py
@@ -122,7 +122,8 @@ class TestIngestion(ERP5TypeTestCase):
     default_pref.setPreferredOoodocServerPortNumber(conversion_server_host[1])
     default_pref.setPreferredDocumentFileNameRegularExpression(FILE_NAME_REGULAR_EXPRESSION)
     default_pref.setPreferredDocumentReferenceRegularExpression(REFERENCE_REGULAR_EXPRESSION)
-    default_pref.enable()
+    if default_pref.getPreferenceState() != 'global':
+      default_pref.enable()
 
   def setSimulatedNotificationScript(self, sequence=None, sequence_list=None, **kw):
     """