diff --git a/src/main/webapp/resources/js/base/base.js b/src/main/webapp/resources/js/base/base.js
index 20c93c21..b2d67c1f 100644
--- a/src/main/webapp/resources/js/base/base.js
+++ b/src/main/webapp/resources/js/base/base.js
@@ -121,9 +121,8 @@ var dialog = {
 	create:function(conf) {
 		let last = {
 			dlg: $("div.modal.show").last()[0],
-			exists: () => last.dlg,
 			setZIndex: (obj, offset) => {
-				if (!last.exists()) return;
+				if (!last.dlg) return;
 				
 				let zIndex = Number($(last.dlg).css("z-index"));
 				obj.css("z-index", zIndex + offset);