diff --git a/backend/src/event-handlers/rollup.js b/backend/src/event-handlers/rollup.js
index 2fbfc3e..820c713 100644
--- a/backend/src/event-handlers/rollup.js
+++ b/backend/src/event-handlers/rollup.js
@@ -222,7 +222,7 @@ const start = async () => {
       return false;
     }
     const valid = authorsMatch(post.authors, expectedAuthors);
-    console.log(`batch post ${pool.postId} is ${valid ? 'valid' : 'invalid'}`);
+    console.log(`batch post ${pool.props.postId} is ${valid ? 'valid' : 'invalid'}`);
     return valid;
   });