diff --git a/src/Content/Widget/CalendarExport.php b/src/Content/Widget/CalendarExport.php
index 2129cd515c..0e85e16c46 100644
--- a/src/Content/Widget/CalendarExport.php
+++ b/src/Content/Widget/CalendarExport.php
@@ -36,6 +36,10 @@ class CalendarExport
 			return;
 		}
 
+		/*
+		 * If it's a kind of profile page (intval($owner_uid)) return if the user not logged in and
+		 * export feature isn't enabled.
+		 */
 		/*
 		 * Cal logged in user (test permission at foreign profile page).
 		 * If the $owner uid is available we know it is part of one of the profile pages (like /cal).