diff --git a/src/app/api/live-tracking/property-documents/route.ts b/src/app/api/live-tracking/property-documents/route.ts
index c8821de6..16e2f9ae 100644
--- a/src/app/api/live-tracking/property-documents/route.ts
+++ b/src/app/api/live-tracking/property-documents/route.ts
@@ -44,7 +44,7 @@ export async function GET(req: Request) {
     // that was already processed: same S3 key gets a new version, but a new DB row
     // is written each time.
     //
-    // Step 1: same s3FileKey → keep the row with the highest id (latest insert).
+    // Step 1: same s3FileKey → keep the row with the most recent upload timestamp.
     const latestByS3Key = new Map<string, (typeof rows)[number]>();
     for (const row of rows) {
       const existing = latestByS3Key.get(row.s3FileKey);