diff --git a/projects/aca-content/folder-rules/src/rule-details/actions/rule-action.ui-component.html b/projects/aca-content/folder-rules/src/rule-details/actions/rule-action.ui-component.html
index c33ba6fcf0..1659e66f3b 100644
--- a/projects/aca-content/folder-rules/src/rule-details/actions/rule-action.ui-component.html
+++ b/projects/aca-content/folder-rules/src/rule-details/actions/rule-action.ui-component.html
@@ -1,6 +1,6 @@
 <form class="aca-rule-action__form" [formGroup]="form">
 
-  <mat-form-field class="aca-rule-action-full-width">
+  <mat-form-field class="aca-rule-action-full-width" appearance="standard">
     <mat-select
       formControlName="actionDefinitionId"
       data-automation-id="rule-action-select"