diff --git a/lib/damask/environment.py b/lib/damask/environment.py
index fedc22e36..040e705b3 100644
--- a/lib/damask/environment.py
+++ b/lib/damask/environment.py
@@ -1,6 +1,6 @@
 # -*- coding: UTF-8 no BOM -*-
 
-import os,subprocess,shlex,re,string
+import os,subprocess,shlex,re
 
 class Environment():
   __slots__ = [ \