diff --git a/mpmaster/src/main/AndroidManifest.xml b/mpmaster/src/main/AndroidManifest.xml
index ab74ab92..1e11038e 100644
--- a/mpmaster/src/main/AndroidManifest.xml
+++ b/mpmaster/src/main/AndroidManifest.xml
@@ -96,7 +96,8 @@
 
         <activity
             android:name=".MainActivity"
-            android:exported="true">
+            android:exported="true"
+            android:screenOrientation="landscape">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />