diff --git a/app/src/displays/related-values/index.ts b/app/src/displays/related-values/index.ts
index 99c24dfa7e..c02fcfaf41 100644
--- a/app/src/displays/related-values/index.ts
+++ b/app/src/displays/related-values/index.ts
@@ -28,7 +28,7 @@ export default defineDisplay(({ i18n }) => ({
 
 		const fields = adjustFieldsForDisplays(getFieldsFromTemplate(options.template), relatedCollection);
 
-		if (fields.includes(primaryKeyField.value.field) === false) {
+		if (primaryKeyField.value && !fields.includes(primaryKeyField.value.field)) {
 			fields.push(primaryKeyField.value.field);
 		}