diff --git a/classes/class.ilObjOnlyOffice.php b/classes/class.ilObjOnlyOffice.php
index 90f47788..9016156a 100755
--- a/classes/class.ilObjOnlyOffice.php
+++ b/classes/class.ilObjOnlyOffice.php
@@ -76,7 +76,7 @@ public function doCreate(bool $clone_mode = false): void
         $end_time = $_POST[ilObjOnlyOfficeGUI::POST_VAR_EDIT_LIMITED_END];
 
         if ($title == null) {
-            $title = explode('.', $_POST[ilObjOnlyOfficeGUI::POST_VAR_FILE]['name'])[0];
+            $title = isset($_POST[ilObjOnlyOfficeGUI::POST_VAR_FILE]['name']) ? $_POST[ilObjOnlyOfficeGUI::POST_VAR_FILE]['name'] : '';
             $_POST['title'] = $title;
         }
 
@@ -182,4 +182,4 @@ public function isAllowedEdit(): bool
     {
         return $this->object_settings->allowEdit();
     }
-}
\ No newline at end of file
+}