diff --git a/drivers/caldav/caldav_driver.php b/drivers/caldav/caldav_driver.php
index eef9bff..8770468 100644
--- a/drivers/caldav/caldav_driver.php
+++ b/drivers/caldav/caldav_driver.php
@@ -193,7 +193,6 @@ class caldav_driver extends calendar_driver
                     'active'        => !in_array($id, $hidden),
                     'group'         => 'x-birthdays',
                     'editable'      => false,
-                    'editable_name' => true,
                     'default'       => false,
                     'children'      => false,
                 );
@@ -1898,11 +1897,11 @@ class caldav_driver extends calendar_driver
                 'SELECT source_id, caldav_url FROM '.$this->db_sources .' WHERE user_id = ?',
                 $this->rc->user->ID
             );
+            $sources_exist = $this->rc->db->num_rows($result);
             if($this->rc->db->num_rows($result)) {
                 $is_ical = new html_checkbox( array(
                     'name' => "is_ical",
                     'value' => 1,
-                    'onload' => 'alert(123)',
                     'onclick' => '
 if(this.checked) {
     $("#ical_url").removeClass("hidden");
@@ -1914,7 +1913,7 @@ else {
 }'
                 ));
                 $formfields['is_ical'] = array(
-                    'label' => $this->cal->gettext('calendar_is_ical'),
+                    'label' => $this->cal->gettext('calendar_ical_file'),
                     'value' => $is_ical->show(null),
                     'class' => 'hidden'
                 );
@@ -1925,7 +1924,6 @@ else {
                     'class' => 'hidden'
                 ));
 
-
                 $caldav_url = new html_select([
                     'name' => 'source_id',
                     'id' => 'caldav_url'
@@ -1939,8 +1937,19 @@ else {
                 );
             }
             else {
-                $this->rc->output->show_message($this->cal->gettext('nosources_error'), 'error');
-                return null;
+                $ical_url = new html_inputfield( array(
+                    'name' => 'ical_url',
+                    'size' => 20,
+                ));
+                $formfields['url'] = array(
+                    'label' => $this->cal->gettext('calendar_ical_file'),
+                    'value' => $ical_url->show(null),
+                );
+                $enable_ics = new html_hiddenfield(['name' => 'is_ical', 'value' => 1]);
+                $formfields['hidden'] = array(
+                    'label' => ' ',
+                    'value' =>$enable_ics->show(null),
+                );
             }
         }
 
diff --git a/localization/de.inc b/localization/de.inc
index 38e3529..1eed9ca 100644
--- a/localization/de.inc
+++ b/localization/de.inc
@@ -8,9 +8,8 @@
  */
 $labels['addsources'] = 'CalDAV Quellen hinzufügen';
 $labels['deletesources'] = 'CalDAV Quellen löschen';
-$labels['nosources_error'] = 'Keine CalDAV Quellen vorhanden.';
 $labels['source_notadded_error'] = 'CalDAV Quelle konnte nicht hinzugefügt werden.';
-$labels['calendar_is_ical'] = 'Ist ics-Datei';
+$labels['calendar_ical_file'] = 'ics-Datei';
 
 $labels['default_view'] = 'Standardansicht';
 $labels['time_format'] = 'Zeitformatierung';
diff --git a/localization/de_CH.inc b/localization/de_CH.inc
index 41c84c8..537caf4 100644
--- a/localization/de_CH.inc
+++ b/localization/de_CH.inc
@@ -8,9 +8,8 @@
  */
 $labels['addsources'] = 'CalDAV Quellen hinzufügen';
 $labels['deletesources'] = 'CalDAV Quellen löschen';
-$labels['nosources_error'] = 'Keine CalDAV Quellen vorhanden.';
 $labels['source_notadded_error'] = 'CalDAV Quelle konnte nicht hinzugefügt werden.';
-$labels['calendar_is_ical'] = 'Ist ics-Datei';
+$labels['calendar_ical_file'] = 'ics-Datei';
 
 $labels['default_view'] = 'Standardansicht';
 $labels['time_format'] = 'Zeitformatierung';
diff --git a/localization/de_DE.inc b/localization/de_DE.inc
index 9839876..1cd495d 100644
--- a/localization/de_DE.inc
+++ b/localization/de_DE.inc
@@ -8,9 +8,8 @@
  */
 $labels['addsources'] = 'CalDAV Quellen hinzufügen';
 $labels['deletesources'] = 'CalDAV Quellen löschen';
-$labels['nosources_error'] = 'Keine CalDAV Quellen vorhanden.';
 $labels['source_notadded_error'] = 'CalDAV Quelle konnte nicht hinzugefügt werden.';
-$labels['calendar_is_ical'] = 'Ist ics-Datei';
+$labels['calendar_ical_file'] = 'ics-Datei';
 
 $labels['default_view'] = 'Standardansicht';
 $labels['time_format'] = 'Zeitformatierung';
diff --git a/localization/en_US.inc b/localization/en_US.inc
index d47e708..8626d9f 100644
--- a/localization/en_US.inc
+++ b/localization/en_US.inc
@@ -13,9 +13,8 @@ $labels = array();
 //caldav driver
 $labels['addsources'] = 'Add CalDAV sources';
 $labels['deletesources'] = 'Delete CalDAV sources';
-$labels['nosources_error'] = 'No CalDAV sources available.';
 $labels['source_notadded_error'] = 'CalDAV source could not be added.';
-$labels['calendar_is_ical'] = 'Is ics file';
+$labels['calendar_ical_file'] = 'ics file';
 
 // preferences
 $labels['default_view'] = 'Default view';