diff --git a/packages/primeng/src/datepicker/datepicker.ts b/packages/primeng/src/datepicker/datepicker.ts
index 45b0537a0bc..3631d5d73aa 100644
--- a/packages/primeng/src/datepicker/datepicker.ts
+++ b/packages/primeng/src/datepicker/datepicker.ts
@@ -490,8 +490,8 @@ export const DATEPICKER_VALUE_ACCESSOR: any = {
                     </div>
                 </div>
                 <div class="p-datepicker-buttonbar" *ngIf="showButtonBar">
-                    <p-button size="small" styleClass="p-datepicker-today-button" [label]="getTranslation('today')" (keydown)="onContainerButtonKeydown($event)" (onClick)="onTodayButtonClick($event)" [ngClass]="[todayButtonStyleClass]" />
-                    <p-button size="small" styleClass="p-datepicker-clear-button" [label]="getTranslation('clear')" (keydown)="onContainerButtonKeydown($event)" (onClick)="onClearButtonClick($event)" [ngClass]="[clearButtonStyleClass]" />
+                    <p-button size="small" styleClass="p-datepicker-today-button" [label]="getTranslation('today')" (keydown)="onContainerButtonKeydown($event)" (onClick)="onTodayButtonClick($event)" [ngClass]="todayButtonStyleClass" />
+                    <p-button size="small" styleClass="p-datepicker-clear-button" [label]="getTranslation('clear')" (keydown)="onContainerButtonKeydown($event)" (onClick)="onClearButtonClick($event)" [ngClass]="clearButtonStyleClass" />
                 </div>
                 <ng-content select="p-footer"></ng-content>
                 <ng-container *ngTemplateOutlet="footerTemplate || _footerTemplate"></ng-container>