diff --git a/tabby-electron/src/services/platform.service.ts b/tabby-electron/src/services/platform.service.ts
index 4ea0ecc3..efa2c05c 100644
--- a/tabby-electron/src/services/platform.service.ts
+++ b/tabby-electron/src/services/platform.service.ts
@@ -120,6 +120,7 @@ export class ElectronPlatformService extends PlatformService {
     async _saveConfigInternal (content: string): Promise<void> {
         const tempPath = this.configPath + '.new'
         await fs.writeFile(tempPath, content, 'utf8')
+        await fs.writeFile(this.configPath + '.backup', content, 'utf8')
         await promisify(gracefulFS.rename)(tempPath, this.configPath)
     }