diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/rpc/knob.component.html b/ui-ngx/src/app/modules/home/components/widget/lib/rpc/knob.component.html
index 0e396d1b07..58b7d7880c 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/rpc/knob.component.html
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/rpc/knob.component.html
@@ -15,8 +15,8 @@
     limitations under the License.
 
 -->
-<div class="tb-knob" fxLayout="column" [ngStyle]="{'pointerEvents': ctx.isEdit ? 'none' : 'all'}">
-  <div #knobContainer id="knob-container" fxFlex fxLayout="column" fxLayoutAlign="center center">
+<div #knobContainer class="tb-knob" fxLayout="column" [ngStyle]="{'pointerEvents': ctx.isEdit ? 'none' : 'all'}">
+  <div fxFlex fxLayout="column" fxLayoutAlign="center center">
     <div #knob class="knob">
       <div #knobValueContainer class="value-container" fxLayout="row" fxLayoutAlign="center center">
         <span #knobValue class="knob-value">{{ value }}</span>