diff --git a/tcp_tests/managers/envmanager_empty.py b/tcp_tests/managers/envmanager_empty.py
index 702d723..b9ab8e1 100644
--- a/tcp_tests/managers/envmanager_empty.py
+++ b/tcp_tests/managers/envmanager_empty.py
@@ -18,7 +18,7 @@
 class EnvironmentManagerEmpty(object):
     """Class-helper for creating VMs via devops environments"""
 
-    _config = None
+    __config = None
 
     def __init__(self, config=None):
         """Initializing class instance and create the environment
@@ -28,12 +28,12 @@
         :param config.hardware.current_snapshot: name of the snapshot that
                                                  descriebe environment status.
         """
-        self._config = config
+        self.__config = config
 
     def lvm_storages(self):
         """Returns data of lvm_storages on nodes in environment
 
-        It's expected that data of self._config.lvm_storages will be
+        It's expected that data of self.__config.lvm_storages will be
         like this:
             {
                 "node1": {
@@ -48,7 +48,7 @@
             }
         :rtype: dict
         """
-        return self._config.underlay.lvm
+        return self.__config.underlay.lvm
 
     def get_ssh_data(self, roles=None):
         raise Exception("EnvironmentManagerEmpty doesn't have SSH details. "
@@ -60,24 +60,24 @@
         - Store the state of the environment <name> to the 'config' object
         - Save 'config' object to a file 'config_<name>.ini'
         """
-        self._config.hardware.current_snapshot = name
-        settings_oslo.save_config(self._config, name)
+        self.__config.hardware.current_snapshot = name
+        settings_oslo.save_config(self.__config, name)
 
     def revert_snapshot(self, name):
         """Check the current state <name> of the environment
 
         - Check that the <name> matches the current state of the environment
-          that is stored in the 'self._config.hardware.current_snapshot'
+          that is stored in the 'self.__config.hardware.current_snapshot'
         - Try to reload 'config' object from a file 'config_<name>.ini'
           If the file not found, then pass with defaults.
         - Set <name> as the current state of the environment after reload
 
         :param name: string
         """
-        if self._config.hardware.current_snapshot != name:
+        if self.__config.hardware.current_snapshot != name:
             raise Exception(
                 "EnvironmentManagerEmpty cannot revert nodes from {} to {}"
-                .format(self._config.hardware.current_snapshot, name))
+                .format(self.__config.hardware.current_snapshot, name))
 
     def start(self):
         """Start environment"""
@@ -96,10 +96,10 @@
         pass
 
     def has_snapshot(self, name):
-        return self._config.hardware.current_snapshot == name
+        return self.__config.hardware.current_snapshot == name
 
     def has_snapshot_config(self, name):
-        return self._config.hardware.current_snapshot == name
+        return self.__config.hardware.current_snapshot == name
 
     def delete_environment(self):
         """Delete environment"""