diff --git a/quickstarts/uppercase-firestore/functions/index.js b/quickstarts/uppercase-firestore/functions/index.js
index 3e80d073a4..eec31bccd9 100644
--- a/quickstarts/uppercase-firestore/functions/index.js
+++ b/quickstarts/uppercase-firestore/functions/index.js
@@ -58,7 +58,7 @@ exports.makeUppercase = functions.firestore.document('/messages/{documentId}')
       
       const uppercase = original.toUpperCase();
       
-      // You must return a Promise when performing asynchronous tasks inside a Functions such as
+      // You must return a Promise when performing asynchronous tasks inside Functions such as
       // writing to Firestore.
       // Setting an 'uppercase' field in Firestore document returns a Promise.
       return snap.ref.set({uppercase}, {merge: true});