diff --git a/yunohost.py b/yunohost.py
index c42d0ec4..7bf1ece5 100644
--- a/yunohost.py
+++ b/yunohost.py
@@ -17,6 +17,8 @@ import string
 if not __debug__:
     import traceback
 
+lemon_tmp_conf   = '/tmp/tmplemonconf'
+
 def random_password(length=8):
     char_set = string.ascii_uppercase + string.digits + string.ascii_lowercase
     return ''.join(random.sample(char_set,length))
@@ -186,6 +188,30 @@ def display_error(error):
         print(json.dumps({ 'error' : error.message }))
 
 
+def lemon_configuration(conf_dict):
+    conf_lines = []
+    for key, value in conf_dict.items():
+        if value is None: line = "delete $tmp"
+        else: line = "$tmp"
+
+        if not isinstance(key, tuple): key = (key,)
+        for level in key:
+            line = line +"->{'"+ level +"'}"
+
+        if value is None: conf_lines.append(line +';')
+        else: conf_lines.append(line +' = \''+ value +'\';')
+
+
+    with open(lemon_tmp_conf,'w') as lemon_conf:
+        for conf_line in conf_lines:
+            lemon_conf.write(conf_line + '\n')
+
+    if os.system('/usr/share/lemonldap-ng/bin/lmYnhMoulinette') == 0:
+        win_msg(_("LemonLDAP configured"))
+    else:
+        raise YunoHostError(1, _("An error occured during LemonLDAP configuration"))
+
+
 class YunoHostError(Exception):
     """
     Custom exception
diff --git a/yunohost_app.py b/yunohost_app.py
index 3cfefca7..39995076 100644
--- a/yunohost_app.py
+++ b/yunohost_app.py
@@ -7,7 +7,7 @@ import shutil
 import stat
 import yaml
 import time
-from yunohost import YunoHostError, YunoHostLDAP, win_msg, random_password, lvl, is_true
+from yunohost import YunoHostError, YunoHostLDAP, win_msg, random_password, lvl, is_true, lemon_configuration
 from yunohost_domain import domain_list, domain_add
 
 repo_path        = '/var/cache/yunohost/repo'
@@ -298,19 +298,9 @@ def app_install(app, domain, path='/', label=None, mode='private'):
             else:
                 raise YunoHostError(22, _("Invalid privacy mode"))
 
-            lemon_conf_lines = [
-               "$tmp->{'locationRules'}->{'"+ domain +"'}->{'(?#"+ unique_app_id +"Z)^"+ path +"'} = '"+ lemon_mode +"';"
-            ]
-
-            with open(lemon_tmp_conf,'w') as lemon_conf:
-                for line in lemon_conf_lines:
-                    lemon_conf.write(line + '\n')
-
-            if os.system('/usr/share/lemonldap-ng/bin/lmYnhMoulinette') == 0:
-                win_msg(_("LemonLDAP configured"))
-            else:
-                raise YunoHostError(1, _("An error occured during LemonLDAP configuration"))
-
+            lemon_configuration({
+                ('locationRules', domain, '(?#'+ unique_app_id +'Z)^'+ path ): lemon_mode
+            })
 
             ##########
             # Apache #
diff --git a/yunohost_domain.py b/yunohost_domain.py
index f8d182d8..8fae0f05 100644
--- a/yunohost_domain.py
+++ b/yunohost_domain.py
@@ -6,7 +6,7 @@ import datetime
 import re
 import shutil
 from urllib import urlopen
-from yunohost import YunoHostError, YunoHostLDAP, win_msg, colorize, validate, get_required_args
+from yunohost import YunoHostError, YunoHostLDAP, win_msg, colorize, validate, get_required_args, lemon_configuration
 
 a2_template_path = '/etc/yunohost/apache/templates'
 a2_app_conf_path = '/etc/yunohost/apache/domains'