diff --git a/app/src/main/java/com/example/cosmosclient/views/GroupListActivity.java b/app/src/main/java/com/example/cosmosclient/views/GroupListActivity.java
index 72f62f1..0efdd18 100644
--- a/app/src/main/java/com/example/cosmosclient/views/GroupListActivity.java
+++ b/app/src/main/java/com/example/cosmosclient/views/GroupListActivity.java
@@ -5,6 +5,7 @@
 import android.graphics.BitmapFactory;
 import android.nfc.Tag;
 import android.os.Bundle;
+import android.support.v4.app.ActivityCompat;
 import android.util.Base64;
 import android.util.Log;
 import android.view.View;
@@ -270,6 +271,7 @@
         } else if (id == R.id.signOutButton){
             gridView.stopEditMode();
             Intent intent=new Intent(GroupListActivity.this, com.example.cosmosclient.views.SigninActivity.class);
+            ActivityCompat.finishAffinity(GroupListActivity.this);
             startActivity(intent);
         }
 /*