diff --git a/packages/astro/templates/content/types.d.ts b/packages/astro/templates/content/types.d.ts
index e25e6451b1..30f4286b80 100644
--- a/packages/astro/templates/content/types.d.ts
+++ b/packages/astro/templates/content/types.d.ts
@@ -31,11 +31,11 @@ declare module 'astro:content' {
 		ContentEntryMap[C]
 	>['slug'];
 
-	export type ReferenceDataEntry<C extends CollectionKey, E extends keyof DataEntryMap[C]> = {
+	export type ReferenceDataEntry<C extends CollectionKey, E extends keyof DataEntryMap[C] = string> = {
 		collection: C;
 		id: E;
 	}
-	export type ReferenceContentEntry<C extends keyof ContentEntryMap, E extends ValidContentEntrySlug<C> | (string & {})> = {
+	export type ReferenceContentEntry<C extends keyof ContentEntryMap, E extends ValidContentEntrySlug<C> | (string & {}) = string> = {
 		collection: C;
 		slug: E;
 	}