diff --git a/app/build.gradle b/app/build.gradle
index 62c57a4..325c7f0 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -65,6 +65,11 @@ android {
         }
     }
 
+    sourceSets{
+        amazon.java.srcDir 'src/free/java'
+        slideme.java.srcDir 'src/free/java'
+    }
+
     externalNativeBuild {
         cmake {
             path "CMakeLists.txt"
diff --git a/app/src/amazon/java/org/emunix/unipatcher/ui/activity/DonateActivity.java b/app/src/amazon/java/org/emunix/unipatcher/ui/activity/DonateActivity.java
deleted file mode 100644
index 3d4e0eb..0000000
--- a/app/src/amazon/java/org/emunix/unipatcher/ui/activity/DonateActivity.java
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- Copyright (c) 2017 Boris Timofeev
-
- This file is part of UniPatcher.
-
- UniPatcher is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- UniPatcher is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
-
- */
-
-package org.emunix.unipatcher.ui.activity;
-
-import android.os.Bundle;
-import android.support.v4.app.FragmentTransaction;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
-import android.view.MenuItem;
-
-import org.emunix.unipatcher.BuildConfig;
-import org.emunix.unipatcher.R;
-import org.sufficientlysecure.donations.DonationsFragment;
-
-public class DonateActivity extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_donate);
-        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
-        setSupportActionBar(toolbar);
-        try {
-            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
-        } catch (NullPointerException e) {
-            /* empty */
-        }
-        getSupportActionBar().setTitle(R.string.donate_activity_title);
-
-        DonationsFragment fragment = (DonationsFragment) getSupportFragmentManager().findFragmentByTag("donationsFragment");
-        if (fragment == null) {
-            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
-            fragment = DonationsFragment.newInstance(BuildConfig.DEBUG,
-                    false, null, null, null,
-                    true, BuildConfig.PAYPAL_USER, BuildConfig.PAYPAL_CURRENCY_CODE, getString(R.string.donation),
-                    false, null, null,
-                    true, BuildConfig.BITCOIN_ADDRESS);
-
-            ft.replace(R.id.donate_fragment, fragment, "donationsFragment");
-            ft.commit();
-        }
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        switch (item.getItemId()) {
-            case android.R.id.home:
-                finish();
-                return true;
-            default:
-                return super.onOptionsItemSelected(item);
-        }
-    }
-}
diff --git a/app/src/slideme/java/org/emunix/unipatcher/ui/activity/DonateActivity.java b/app/src/slideme/java/org/emunix/unipatcher/ui/activity/DonateActivity.java
deleted file mode 100644
index 3d4e0eb..0000000
--- a/app/src/slideme/java/org/emunix/unipatcher/ui/activity/DonateActivity.java
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- Copyright (c) 2017 Boris Timofeev
-
- This file is part of UniPatcher.
-
- UniPatcher is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- UniPatcher is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with UniPatcher.  If not, see <http://www.gnu.org/licenses/>.
-
- */
-
-package org.emunix.unipatcher.ui.activity;
-
-import android.os.Bundle;
-import android.support.v4.app.FragmentTransaction;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
-import android.view.MenuItem;
-
-import org.emunix.unipatcher.BuildConfig;
-import org.emunix.unipatcher.R;
-import org.sufficientlysecure.donations.DonationsFragment;
-
-public class DonateActivity extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_donate);
-        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
-        setSupportActionBar(toolbar);
-        try {
-            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
-        } catch (NullPointerException e) {
-            /* empty */
-        }
-        getSupportActionBar().setTitle(R.string.donate_activity_title);
-
-        DonationsFragment fragment = (DonationsFragment) getSupportFragmentManager().findFragmentByTag("donationsFragment");
-        if (fragment == null) {
-            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
-            fragment = DonationsFragment.newInstance(BuildConfig.DEBUG,
-                    false, null, null, null,
-                    true, BuildConfig.PAYPAL_USER, BuildConfig.PAYPAL_CURRENCY_CODE, getString(R.string.donation),
-                    false, null, null,
-                    true, BuildConfig.BITCOIN_ADDRESS);
-
-            ft.replace(R.id.donate_fragment, fragment, "donationsFragment");
-            ft.commit();
-        }
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        switch (item.getItemId()) {
-            case android.R.id.home:
-                finish();
-                return true;
-            default:
-                return super.onOptionsItemSelected(item);
-        }
-    }
-}