diff --git a/libs/ui/src/lib/activities-filter/activities-filter.component.html b/libs/ui/src/lib/activities-filter/activities-filter.component.html
index 4ad0dfde8..d87ce16ce 100644
--- a/libs/ui/src/lib/activities-filter/activities-filter.component.html
+++ b/libs/ui/src/lib/activities-filter/activities-filter.component.html
@@ -46,7 +46,7 @@
     disabled
     mat-icon-button
     matSuffix
-    [ngClass]="{ 'd-none': !isLoading }"
+    [ngClass]="{ 'd-none': !isLoading() }"
   >
     <mat-spinner matSuffix [diameter]="20" />
   </button>
diff --git a/libs/ui/src/lib/activities-filter/activities-filter.component.ts b/libs/ui/src/lib/activities-filter/activities-filter.component.ts
index 55ae42bea..6b522715b 100644
--- a/libs/ui/src/lib/activities-filter/activities-filter.component.ts
+++ b/libs/ui/src/lib/activities-filter/activities-filter.component.ts
@@ -54,11 +54,11 @@ import { translate } from '../i18n';
 })
 export class GfActivitiesFilterComponent implements OnChanges {
   @Input() allFilters: Filter[];
-  @Input() isLoading: boolean;
 
   @ViewChild('autocomplete') protected matAutocomplete: MatAutocomplete;
   @ViewChild('searchInput') protected searchInput: ElementRef<HTMLInputElement>;
 
+  public readonly isLoading = input.required<boolean>();
   public readonly placeholder = input.required<string>();
   public readonly valueChanged = output<Filter[]>();