--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@ import glob, os, sys
 from sys import platform, argv
 
 # compress psychojs to a zip file for packaging
-if '-noJS' in argv:  # only takes 0.5s but could skip if you prefer
+if '-noJS' in argv or 'clean' in argv:  # only takes 0.5s but could skip if you prefer
     pass
 else:
     import shutil
