diff --git a/pisi/actionsapi/shelltools.py b/pisi/actionsapi/shelltools.py
index 223cf0ec..184571b2 100644
--- a/pisi/actionsapi/shelltools.py
+++ b/pisi/actionsapi/shelltools.py
@@ -206,6 +206,6 @@ def system(command):
         line = p.readline()
         if not line:
             break
-        ctx.ui.debug(line[0:len(line)-1])
+        ctx.ui.debug(line[:-1])
 
     return p.close()