diff --git a/installsystems/tarball.py b/installsystems/tarball.py
index 86bbbc3edab02fe1a70a99320c3a2845395f8f56..cb2af46a1ff55560c3d24ef527c4b1cbb1883d88 100644
--- a/installsystems/tarball.py
+++ b/installsystems/tarball.py
@@ -7,6 +7,7 @@ Tarball wrapper
 '''
 
 import os
+import sys
 import time
 import tarfile
 import StringIO