diff --git a/packages/block-library/src/template-part/index.js b/packages/block-library/src/template-part/index.js
index 6e77fcf804429..20976e231d811 100644
--- a/packages/block-library/src/template-part/index.js
+++ b/packages/block-library/src/template-part/index.js
@@ -43,7 +43,9 @@ export const settings = {
 			return;
 		}
 
-		return decodeEntities( entity.title ) || capitalCase( entity.slug );
+		return (
+			decodeEntities( entity.title ) || capitalCase( entity.slug || '' )
+		);
 	},
 	edit,
 };