diff --git a/layouts/v7/modules/Calendar/resources/Calendar.js b/layouts/v7/modules/Calendar/resources/Calendar.js
index 9c62c6162c9e29b1dbffb031f4cf29844ce578e1..cb489e12f4f09c1857616facd9fbae7876d90a6b 100644
--- a/layouts/v7/modules/Calendar/resources/Calendar.js
+++ b/layouts/v7/modules/Calendar/resources/Calendar.js
@@ -1579,7 +1579,7 @@ Vtiger.Class("Calendar_Calendar_Js", {
 			editable: true,
 			eventLimit: true,
 			defaultView: userDefaultActivityView,
-			axisFormat: userDefaultTimeFormat,
+			slotLabelFormat: userDefaultTimeFormat,
 			timeFormat: userDefaultTimeFormat,
 			events: [],
 			monthNames: [