diff --git a/tools/broadcast-local/schema.test.ts b/tools/broadcast-local/schema.test.ts
index e1789c0bd2..8e4ef53ac7 100644
--- a/tools/broadcast-local/schema.test.ts
+++ b/tools/broadcast-local/schema.test.ts
@@ -56,7 +56,6 @@ describe("local broadcast schema", () => {
       broadcastFrom: "vera",
       observedWrittenAt: writtenAt,
       sourcePath: "/Users/acehack/.local/share/zeta-broadcasts/vera.md",
-      note: undefined,
     });
   });
 
diff --git a/tools/broadcast-local/schema.ts b/tools/broadcast-local/schema.ts
index e1f70c67fc..6fc8caac50 100644
--- a/tools/broadcast-local/schema.ts
+++ b/tools/broadcast-local/schema.ts
@@ -115,8 +115,8 @@ export function makeLocalBroadcastReceipt(config: {
     broadcastId: config.envelope.id,
     broadcastFrom: config.envelope.from,
     observedWrittenAt: config.envelope.writtenAt,
-    sourcePath: config.sourcePath,
-    note: config.note,
+    ...(config.sourcePath === undefined ? {} : { sourcePath: config.sourcePath }),
+    ...(config.note === undefined ? {} : { note: config.note }),
   };
 }