diff --git a/changelog.md b/changelog.md
index 5d18f7f..d59d495 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## 2024-11-05 - 5.1.1 - fix(AppData)
+Fix issue with overwrite object handling in AppData class
+
+- Corrected logic to handle cases when overwriteObject is undefined.
+
 ## 2024-11-05 - 5.1.0 - feat(appdata)
 Add support for overwriting keys using the overwriteObject option in AppData
 
diff --git a/ts/00_commitinfo_data.ts b/ts/00_commitinfo_data.ts
index 5680f4a..fa48c38 100644
--- a/ts/00_commitinfo_data.ts
+++ b/ts/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/npmextra',
-  version: '5.1.0',
+  version: '5.1.1',
   description: 'A utility to enhance npm with additional configuration, tool management capabilities, and a key-value store for project setups.'
 }
diff --git a/ts/npmextra.classes.appdata.ts b/ts/npmextra.classes.appdata.ts
index c93e391..71d2968 100644
--- a/ts/npmextra.classes.appdata.ts
+++ b/ts/npmextra.classes.appdata.ts
@@ -177,9 +177,11 @@ export class AppData<T = any> {
         await processEnvMapping(key as keyof T, this.options.envMapping[key]);
       }
 
-      for (const key in Object.keys(this.options.overwriteObject)) {
-        console.log(`-> heads up: overwriting key ${key} from options.overwriteObject`);
-        await this.kvStore.writeKey(key as keyof T, this.options.overwriteObject[key]);
+      if (this.options.overwriteObject) {
+        for (const key in Object.keys(this.options.overwriteObject)) {
+          console.log(`-> heads up: overwriting key ${key} from options.overwriteObject`);
+          await this.kvStore.writeKey(key as keyof T, this.options.overwriteObject[key]);
+        }
       }
     }