diff --git a/src/index.ts b/src/index.ts
index 606a42f..33a64c5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -60,7 +60,7 @@ const parseNoteFile = async (dirName: string, year: string, file: string): Promi
       ? attributes.description
       : "summary" in attributes && typeof attributes.summary === "string"
       ? attributes.summary
-      : body.split(title)[1].trim();
+      : body.split(title)[1]?.trim();
 
   return {
     slug: file,