diff --git a/bluepyopt/deapext/optimisationsCMA.py b/bluepyopt/deapext/optimisationsCMA.py
index 0e036fea..35b0ffbf 100644
--- a/bluepyopt/deapext/optimisationsCMA.py
+++ b/bluepyopt/deapext/optimisationsCMA.py
@@ -250,7 +250,6 @@ def run(
             terminator (multiprocessing.Event): exit loop when is set.
                 Not taken into account if None.
         """
-
         if cp_filename:
             cp_filename_tmp = cp_filename + '.tmp'