diff --git a/mongo_connector/doc_managers/mongo_doc_manager.py b/mongo_connector/doc_managers/mongo_doc_manager.py
index <HASH>..<HASH> 100644
--- a/mongo_connector/doc_managers/mongo_doc_manager.py
+++ b/mongo_connector/doc_managers/mongo_doc_manager.py
@@ -55,8 +55,6 @@ class DocManager(DocManagerBase):
         except pymongo.errors.ConnectionFailure:
             raise errors.ConnectionFailed("Failed to connect to MongoDB")
         self.namespace_set = kwargs.get("namespace_set")
-        for namespace in self._namespaces():
-            self.mongo["__mongo_connector"][namespace].create_index("_ts")
 
     @wrap_exceptions
     def _namespaces(self):
@@ -83,8 +81,8 @@ class DocManager(DocManagerBase):
         """
         logging.info(
             "Mongo DocManager Stopped: If you will not target this system "
-            "again with mongo-connector then please drop the database "
-            "__mongo_connector in order to return resources to the OS."
+            "again with mongo-connector then you may drop the database "
+            "__mongo_connector, which holds metadata for Mongo Connector."
         )
 
     @wrap_exceptions
Don't create an index on '_ts' when replicating to MongoDB, since this causes continuously growing index names like '__mongo_connector.__mongo_connector.__mongo_connector.<...>'.