diff --git a/src/app/components/autocomplete/autocomplete.ts b/src/app/components/autocomplete/autocomplete.ts
index 02ba2686edb..a294a053117 100755
--- a/src/app/components/autocomplete/autocomplete.ts
+++ b/src/app/components/autocomplete/autocomplete.ts
@@ -555,7 +555,7 @@ export class AutoComplete implements AfterViewChecked, AfterContentInit, OnDestr
      * Property name or getter function to use as the label of an option.
      * @group Props
      */
-    @Input() optionLabel: string | undefined;
+    @Input() optionLabel: string | ((item: any) => string) | undefined;
     /**
      * Unique identifier of the component.
      * @group Props