From 68954f8db18fa5fdf4aac20e7c12137fbd0d5bf1 Mon Sep 17 00:00:00 2001
From: Igor Kulikov <ikulikov@thingsboard.io>
Date: Wed, 22 Jan 2020 20:11:00 +0200
Subject: [PATCH] Minor improvements

---
 ui-ngx/src/app/core/services/utils.service.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ui-ngx/src/app/core/services/utils.service.ts b/ui-ngx/src/app/core/services/utils.service.ts
index e5c6196412..3ab20bb36d 100644
--- a/ui-ngx/src/app/core/services/utils.service.ts
+++ b/ui-ngx/src/app/core/services/utils.service.ts
@@ -360,7 +360,10 @@ export class UtilsService {
   }
 
   public createLabelFromDatasource(datasource: Datasource, pattern: string) {
-    let label = deepClone(pattern);
+    let label = pattern;
+    if (!datasource) {
+      return label;
+    }
     let match = varsRegex.exec(pattern);
     while (match !== null) {
       const variable = match[0];