diff -Naur calibre.orig/src/calibre/linux.py calibre/src/calibre/linux.py
--- calibre.orig/src/calibre/linux.py	2014-07-11 02:19:43.000000000 +0000
+++ calibre/src/calibre/linux.py	2014-07-13 05:18:39.817994398 +0000
@@ -581,6 +581,7 @@
 
         complete -o nospace -C %s ebook-convert
         ''')%complete)
+        zsh.write()
 # }}}
 
 class PostInstall: