diff --git a/src/DIRAC/MonitoringSystem/DB/MonitoringDB.py b/src/DIRAC/MonitoringSystem/DB/MonitoringDB.py
index 19c7f761de6..e9220835407 100644
--- a/src/DIRAC/MonitoringSystem/DB/MonitoringDB.py
+++ b/src/DIRAC/MonitoringSystem/DB/MonitoringDB.py
@@ -43,7 +43,7 @@
 class MonitoringDB(ElasticDB):
     """Extension of ElasticDB for Monitoring system DB"""
 
-    def __init__(self, name="Monitoring/MonitoringDB", readOnly=False):
+    def __init__(self, name="Monitoring/MonitoringDB"):
         """Standard constructor"""
 
         try:
@@ -55,7 +55,6 @@ def __init__(self, name="Monitoring/MonitoringDB", readOnly=False):
             self.log.error("Can't connect to MonitoringDB", repr(ex))
             raise ex
 
-        self.__readonly = readOnly
         self.documentTypes = {}
 
         # loads all monitoring indexes and types.
diff --git a/tests/Integration/Core/Test_ElasticsearchDB.py b/tests/Integration/Core/Test_ElasticsearchDB.py
index b89938c7a60..66b0c688bc8 100644
--- a/tests/Integration/Core/Test_ElasticsearchDB.py
+++ b/tests/Integration/Core/Test_ElasticsearchDB.py
@@ -496,8 +496,10 @@ def test_Search():
 #   assertEqual(result.aggregations['2'].buckets[1]['end_data'].buckets[0].avg_buckets, {u'value': 4})
 @pytest.fixture
 def setUpAndTearDown():
-    result = elasticSearchDB.createIndex("my-index", {})
-    assert result["OK"]
+    res = elasticSearchDB.existingIndex("my-index")
+    if not res["OK"] or not res["Value"]:
+        result = elasticSearchDB.createIndex("my-index", {})
+        assert result["OK"]
     result = elasticSearchDB.index(
         indexName="my-index", body={"quantity": 1, "Product": "a", "timestamp": 1458226213000}, docID=1
     )