diff --git a/plugins/catalog-react/api-report.md b/plugins/catalog-react/api-report.md
index 711e1935c1..bb19e2a5b8 100644
--- a/plugins/catalog-react/api-report.md
+++ b/plugins/catalog-react/api-report.md
@@ -285,7 +285,7 @@ export function EntityRefLinks(props: EntityRefLinksProps): JSX.Element;
 export type EntityRefLinksProps = {
   entityRefs: (string | Entity | CompoundEntityRef)[];
   defaultKind?: string;
-  getTitle?: (cer: CompoundEntityRef) => string;
+  getTitle?: (cer: CompoundEntityRef) => string | undefined;
 } & Omit<LinkProps, 'to'>;
 
 // @public
diff --git a/plugins/catalog-react/src/components/EntityRefLink/EntityRefLinks.tsx b/plugins/catalog-react/src/components/EntityRefLink/EntityRefLinks.tsx
index b1a0c39558..cf18a2d643 100644
--- a/plugins/catalog-react/src/components/EntityRefLink/EntityRefLinks.tsx
+++ b/plugins/catalog-react/src/components/EntityRefLink/EntityRefLinks.tsx
@@ -26,7 +26,7 @@ import { LinkProps } from '@backstage/core-components';
 export type EntityRefLinksProps = {
   entityRefs: (string | Entity | CompoundEntityRef)[];
   defaultKind?: string;
-  getTitle?: (cer: CompoundEntityRef) => string;
+  getTitle?: (cer: CompoundEntityRef) => string | undefined;
 } & Omit<LinkProps, 'to'>;
 
 /**