diff --git a/BeWoPlanerChat/bewoplaner-chat-android/app/src/main/AndroidManifest.xml b/BeWoPlanerChat/bewoplaner-chat-android/app/src/main/AndroidManifest.xml
index 03e4bed..a1f9a1f 100644
--- a/BeWoPlanerChat/bewoplaner-chat-android/app/src/main/AndroidManifest.xml
+++ b/BeWoPlanerChat/bewoplaner-chat-android/app/src/main/AndroidManifest.xml
@@ -17,6 +17,7 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
         <activity
+            android:launchMode="singleInstance"
             android:name="de.beyondsoft.ownchat.page.splash.SplashActivity"
             android:screenOrientation="portrait"
             android:theme="@style/AppTheme.FullBackground">
@@ -27,6 +28,7 @@
             </intent-filter>
         </activity>
         <activity
+            android:launchMode="singleInstance"
             android:name="de.beyondsoft.ownchat.page.login.LoginActivity"
             android:screenOrientation="portrait"
             android:theme="@style/AppTheme.FullBackground" />
@@ -122,7 +124,9 @@
             android:theme="@style/ChatStyle"
             />
 
-        <activity android:name=".page.sharing.SharingActivity"
+        <activity
+            android:name=".page.sharing.SharingActivity"
+            android:launchMode="singleInstance"
             android:label="ownChat"
             android:screenOrientation="portrait"
             android:theme="@style/ChatStyle">