diff --git a/src/Model/Ensembles/EnsembleList.py b/src/Model/Ensembles/EnsembleList.py
index 8ebbe94c..14041a84 100644
--- a/src/Model/Ensembles/EnsembleList.py
+++ b/src/Model/Ensembles/EnsembleList.py
@@ -16,7 +16,6 @@
 
 # -*- coding: utf-8 -*-
 
-from copy import copy
 from tools import trace, timer
 
 from Model.Tools.PamhyrListExt import PamhyrModelList