diff --git a/build/media_source/system/js/fields/calendar.es5.js b/build/media_source/system/js/fields/calendar.es5.js
index b4bc2721020b4..ea6a7ab7e1a78 100644
--- a/build/media_source/system/js/fields/calendar.es5.js
+++ b/build/media_source/system/js/fields/calendar.es5.js
@@ -779,16 +779,27 @@
 					cell.colSpan = 1;
 				}
 
-				H.addEventListener("change", function (event) {
-					self.updateTime(event.target.parentNode.parentNode.childNodes[1].childNodes[0].value,
-						event.target.parentNode.parentNode.childNodes[2].childNodes[0].value,
-						event.target.parentNode.parentNode.childNodes[3].childNodes[0].value);
-				}, false);
-				M.addEventListener("change", function (event) {
-					self.updateTime(event.target.parentNode.parentNode.childNodes[1].childNodes[0].value,
-						event.target.parentNode.parentNode.childNodes[2].childNodes[0].value,
-						event.target.parentNode.parentNode.childNodes[3].childNodes[0].value);
-				}, false);
+				if (self.params.weekNumbers) {
+					H.addEventListener("change", function (event) {
+						self.updateTime(event.target.parentNode.parentNode.childNodes[1].childNodes[0].value,
+							event.target.parentNode.parentNode.childNodes[2].childNodes[0].value,
+							event.target.parentNode.parentNode.childNodes[3].childNodes[0].value);
+					}, false);
+					M.addEventListener("change", function (event) {
+						self.updateTime(event.target.parentNode.parentNode.childNodes[1].childNodes[0].value,
+							event.target.parentNode.parentNode.childNodes[2].childNodes[0].value,
+							event.target.parentNode.parentNode.childNodes[3].childNodes[0].value);
+					}, false);
+				} else {
+					H.addEventListener("change", function (event) {
+						self.updateTime(event.target.parentNode.parentNode.childNodes[1].childNodes[0].value,
+							event.target.parentNode.parentNode.childNodes[2].childNodes[0].value);
+					}, false);
+					M.addEventListener("change", function (event) {
+						self.updateTime(event.target.parentNode.parentNode.childNodes[1].childNodes[0].value,
+							event.target.parentNode.parentNode.childNodes[2].childNodes[0].value);
+					}, false);
+				}
 			})();
 		}