diff --git a/src/blocks/utils.spec.ts b/src/blocks/utils.spec.ts
index e743311e2..39735a8ba 100644
--- a/src/blocks/utils.spec.ts
+++ b/src/blocks/utils.spec.ts
@@ -8,7 +8,6 @@ export const TEST_PROJECT_FRONT_MATTER: ProjectFrontMatterProps = {
   open_access: false,
   github: '',
   binder: '',
-  subtitle: '',
   short_title: '',
 };