diff --git a/infolog/inc/class.infolog_ui.inc.php b/infolog/inc/class.infolog_ui.inc.php
index a2a02ae417..e76e2f4a95 100644
--- a/infolog/inc/class.infolog_ui.inc.php
+++ b/infolog/inc/class.infolog_ui.inc.php
@@ -1604,6 +1604,7 @@ class infolog_ui
 				$parent = $this->bo->so->data;
 				$content['info_id'] = $info_id = 0;
 				$content['info_uid'] = ''; // ensure that we have our own UID
+				$content['caldav_name'] = ''; // ensure that we have our own caldav_name
 				$content['info_owner'] = $this->user;
 				$content['info_id_parent'] = $parent['info_id'];
 				/*
diff --git a/infolog/setup/setup.inc.php b/infolog/setup/setup.inc.php
index ecfc5e4ba8..0833543d53 100755
--- a/infolog/setup/setup.inc.php
+++ b/infolog/setup/setup.inc.php
@@ -12,7 +12,7 @@
  */
 
 $setup_info['infolog']['name']      = 'infolog';
-$setup_info['infolog']['version']   = '1.9.002';
+$setup_info['infolog']['version']   = '1.9.003';
 $setup_info['infolog']['app_order'] = 5;
 $setup_info['infolog']['tables']    = array('egw_infolog','egw_infolog_extra');
 $setup_info['infolog']['enable']    = 1;
diff --git a/infolog/setup/tables_update.inc.php b/infolog/setup/tables_update.inc.php
index 54ea43e285..1088396718 100644
--- a/infolog/setup/tables_update.inc.php
+++ b/infolog/setup/tables_update.inc.php
@@ -679,4 +679,27 @@ function infolog_upgrade1_9_001()
 	));
 
 	return $GLOBALS['setup_info']['infolog']['currentver'] = '1.9.002';
+}
+
+
+/**
+ * Fix caldav_name of subentries is identical with parent
+ */
+function infolog_upgrade1_9_002()
+{
+	$ids = array();
+	foreach($GLOBALS['egw_setup']->db->query('SELECT sub.info_id
+FROM egw_infolog sub
+JOIN egw_infolog parent ON sub.info_id_parent=parent.info_id
+WHERE parent.caldav_name=sub.caldav_name',__LINE__,__FILE__) as $row)
+	{
+		$ids[] = $row['info_id'];
+	}
+	if ($ids)
+	{
+		$GLOBALS['egw_setup']->db->query('UPDATE egw_infolog SET caldav_name='.
+			$GLOBALS['egw_setup']->db->concat('info_id',"'.ics'").
+			' WHERE info_id IN ('.implode(',',$ids).')',__LINE__,__FILE__);
+	}
+	return $GLOBALS['setup_info']['infolog']['currentver'] = '1.9.003';
 }
\ No newline at end of file