diff --git a/fsl_course/feat3/feedsRun3.py b/fsl_course/feat3/feedsRun3.py
index 580c4126b107a44a99badd8c802c9db336213e5b..56e3b0edb4ee8d014301d2f69dda0c2e73176ca2 100755
--- a/fsl_course/feat3/feedsRun3.py
+++ b/fsl_course/feat3/feedsRun3.py
@@ -42,7 +42,7 @@ run(cmd)
 
 # run FEAT
 shutil.copytree(origFeatDir,newFeatDir)
-run("chmod +w -R {0}".format(newFeatDir))
+run("chmod -R a+w {0}".format(newFeatDir))
 run("unset SGE_ROOT; feat {0}".format(op.join(outDir, "design.fsf")))
 
 sys.exit(0)