diff --git a/conf/init_calibre_db_ldap_settings b/conf/init_calibre_db_ldap_settings
index 6c01f4d..6ebff29 100644
--- a/conf/init_calibre_db_ldap_settings
+++ b/conf/init_calibre_db_ldap_settings
@@ -5,6 +5,6 @@ config_ldap_authentication=0,
 config_ldap_dn=\'dc=yunohost,dc=org\',
 config_ldap_user_object=\'\(\&\(objectClass=posixAccount\)\(permission=cn=calibreweb.main,ou=permission,dc=yunohost,dc=org\)\(uid=%s\)\)\',
 config_ldap_openldap=1,
-config_ldap_group_object_filter=\'\(\&\(objectClass=posixGroup\)\(permission=cn=%s.main,ou=permission,dc=yunohost,dc=org\)\)\',
+config_ldap_group_object_filter=\'\(\&\(objectClass=posixGroup\)\(cn=%s.main\)\)\',
 config_ldap_group_members_field=\'memberUid\',
 config_ldap_group_name=\'calibreweb\'
\ No newline at end of file
diff --git a/scripts/install b/scripts/install
index 473947a..1cafaca 100755
--- a/scripts/install
+++ b/scripts/install
@@ -177,26 +177,6 @@ chown -R $app:$app /var/log/$app
 #=================================================
 # SPECIFIC SETUP
 #=================================================
-# SET SQLITE DATABASE SETTINGS
-#=================================================
-ynh_script_progression --message="Setting up database and settings..." --weight=5 
-#we need to start and stop the service so that initial app.db file is created and that we can set default data
-#If port 8083 is already in use (ex for second instance), then service start will fail, which is expected : so we do not want
-#to set $port on the line match. "server on" will be displayed in case the port is already in use and should be ok to spot the fact that the database is initialized.
-#ynh_systemd_action --service_name=$app --action="start" --line_match="Starting Gevent server on" --log_path="$final_path/calibre-web.log" -t 30
-#sleep required on low spec like raspberryPi
-#sleep 2s
-#remove unwanted calibre-web.log
-#ynh_secure_remove --file="$final_path/calibre-web.log"
-#ynh_systemd_action --service_name=$app --action="stop"
-
-
-#set database settings as per conf file
-#conf="\"UPDATE settings SET $(. <(echo -E echo $(<../conf/init_calibre_db_settings))), $(. <(echo -E echo $(<../conf/init_calibre_db_ldap_settings))) WHERE ID=1\""
-#eval sqlite3 $final_path/app.db "$conf"
-
-#conf="\"UPDATE user SET $(. <(echo -E echo $(<../conf/init_calibre_db_user))) WHERE ID=1\""
-#eval sqlite3 $final_path/app.db "$conf"
 
 #Update Imagick policy as per https://github.com/janeczku/calibre-web/wiki/FAQ#what-to-do-if-cover-pictures-are-not-extracted-from-pdf-files
 ynh_replace_string --match_string="<policy domain="coder" rights="none" pattern="PDF" />" \
diff --git a/scripts/upgrade b/scripts/upgrade
index 816f5ee..e17fb06 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -114,6 +114,12 @@ if version_gt "0.6.6" "$current_upstream_app_version" && [ "$current_upstream_pa
 	current_upstream_app_version="0.6.6"
 fi
 
+#LDAP settings were wrongly set in version prior to 0.6.13 and we could not retrieve LDAP users. This will change the settings to correct values 
+if sqlite3 app.db "SELECT config_ldap_group_object_filter FROM settings" \
+	| grep -xq "(&(objectClass=posixGroup)(permission=cn=%s.main,ou=permission,dc=yunohost,dc=org))" ; then 
+	eval sqlite3 ./app.db "UPDATE settings SET config_ldap_group_object_filter='(&(objectClass=posixGroup)(cn=%s.main))' WHERE ID=1"
+fi
+
 #=================================================
 # STANDARD UPGRADE STEPS
 #=================================================
diff --git a/sources/patches/app-config_sql.py.patch.src b/sources/patches/app-config_sql.py.patch.src
index 43019d4..7574855 100644
--- a/sources/patches/app-config_sql.py.patch.src
+++ b/sources/patches/app-config_sql.py.patch.src
@@ -50,7 +50,7 @@
      config_ldap_member_user_object = Column(String, default='') #
      config_ldap_openldap = Column(Boolean, default=True)
 -    config_ldap_group_object_filter = Column(String, default='(&(objectclass=posixGroup)(cn=%s))')
-+    config_ldap_group_object_filter = Column(String, default='(&(objectClass=posixGroup)(permission=cn=%s.main,ou=permission,dc=yunohost,dc=org))')
++    config_ldap_group_object_filter = Column(String, default='(&(objectClass=posixGroup)(cn=%s.main))')
      config_ldap_group_members_field = Column(String, default='memberUid')
      config_ldap_group_name = Column(String, default='calibreweb')