diff --git a/npm/package-lock.json b/npm/package-lock.json
index 7aa2bd4..4efcf0b 100644
--- a/npm/package-lock.json
+++ b/npm/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "earthstar-letterbox-layer",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/npm/package.json b/npm/package.json
index 99d588a..8a6f040 100644
--- a/npm/package.json
+++ b/npm/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@earthstar-project/rich-threads-layer",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "",
   "main": "index.cjs",
   "module": "index.js",
diff --git a/src/letterbox_layer.ts b/src/letterbox_layer.ts
index 17b1324..304751c 100644
--- a/src/letterbox_layer.ts
+++ b/src/letterbox_layer.ts
@@ -488,7 +488,7 @@ export default class LetterboxLayer {
   setThreadRootDraft(
     content: string,
     id?: string,
-  ): ValidationError | WriteResult {
+  ): ValidationError | string {
     if (!this._user) {
       return new ValidationError(
         "Couldn't clear draft reply without a known user.",
@@ -506,11 +506,17 @@ export default class LetterboxLayer {
       return this.setThreadRootDraft(content, `${parseInt(timestamp) + 1}`);
     }
 
-    return this._storage.set(this._user, {
+    const res = this._storage.set(this._user, {
       content,
       format: "es.4",
       path: draftPath,
     });
+    
+    if (isErr(res)) {
+      return res
+    }
+    
+    return timestamp;
   }
 
   clearThreadRootDraft(id: string) {