diff --git a/packages/edit-site/src/components/add-new-post/index.js b/packages/edit-site/src/components/add-new-post/index.js
index ca0c7e1cd8e98..a30f5995aab6f 100644
--- a/packages/edit-site/src/components/add-new-post/index.js
+++ b/packages/edit-site/src/components/add-new-post/index.js
@@ -45,6 +45,7 @@ export default function AddNewPostModal( { postType, onSave, onClose } ) {
 				{
 					status: 'draft',
 					title,
+					slug: title ?? undefined,
 					content:
 						!! postTypeObject.template &&
 						postTypeObject.template.length