diff --git a/modoboa_installer/scripts/dovecot.py b/modoboa_installer/scripts/dovecot.py
index d1de329..98381e6 100644
--- a/modoboa_installer/scripts/dovecot.py
+++ b/modoboa_installer/scripts/dovecot.py
@@ -5,6 +5,7 @@ import os
 import pwd
 import shutil
 import stat
+import uuid
 
 from .. import database
 from .. import package