diff --git a/var/spack/repos/builtin/improved-rdock/package.py b/var/spack/repos/builtin/improved-rdock/package.py
index 3178a4dc183..2da7523a477 100644
--- a/var/spack/repos/builtin/improved-rdock/package.py
+++ b/var/spack/repos/builtin/improved-rdock/package.py
@@ -5,7 +5,6 @@
 
 
 from spack import *
-# import os
 
 
 class ImprovedRdock(MakefilePackage):