diff --git a/source/python/classes/ControlFile.py b/source/python/classes/ControlFile.py
index 250aea25c682a995c4e6b784dc6367e7ad001e41..2fb50142303d7a77c59ec24f39dbef8a26cda275 100644
--- a/source/python/classes/ControlFile.py
+++ b/source/python/classes/ControlFile.py
@@ -164,11 +164,11 @@ class ControlFile(object):
                          'ectrans', 'debug', 'request', 'public', 'purefc',
                          'rrint']
 
-        self.__read_controlfile__()
+        self._read_controlfile()
 
         return
 
-    def __read_controlfile__(self):
+    def _read_controlfile(self):
         '''Read CONTROL file and assign all CONTROL file variables.
 
         Parameters