diff --git a/modoboa_installer/scripts/modoboa.py b/modoboa_installer/scripts/modoboa.py
index 50bad37..b2bf45e 100644
--- a/modoboa_installer/scripts/modoboa.py
+++ b/modoboa_installer/scripts/modoboa.py
@@ -2,7 +2,6 @@
 
 import os
 
-from .. import database
 from .. import python
 from .. import utils
 
@@ -69,6 +68,15 @@ class Modoboa(base.Installer):
                 prefix, " ".join(args)),
             sudo_user=self.user, cwd=self.home_dir)
 
+    def get_template_context(self):
+        """Additional variables."""
+        context = super(Modoboa, self).get_template_context()
+        context.update({
+            "dovecot_mailboxes_owner": (
+                self.config.get("dovecot", "mailboxes_owner"))
+        })
+        return context
+
     def post_run(self):
         """Additional tasks."""
         self._setup_venv()