diff --git a/README.md b/README.md
index 22278b8..586319a 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Leveraging the openness and versatility of Android, Jtun Router includes rich ne
 
 ## Device Features
 
-![mobile ui](./README/mobile ui.png)
+![mobile ui](./README/mobile_ui.png)
 
 1. **APK Store**: Jtun Router includes an app store that integrates common APKs, allowing users to easily manage and operate apps through a straightforward interface.
 2. **Firmware Upgrades**: Upgrading the firmware retains current configurations, eliminating the need to reinstall APKs after updates.
diff --git a/README/mobile ui.png b/README/mobile_ui.png
similarity index 100%
rename from README/mobile ui.png
rename to README/mobile_ui.png
diff --git a/README_zh.md b/README_zh.md
index d9c41b4..2976ca0 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -17,7 +17,7 @@ JtunRouter 目标是提供一个人人可用的安卓设备网络管理的应用
 
 
 
-![mobile ui](./README/mobile ui.png)
+![mobile ui](./README/mobile_ui.png)