diff --git a/app/src/main/java/com/codedead/deadhash/domain/utils/StreamUtility.java b/app/src/main/java/com/codedead/deadhash/domain/utils/StreamUtility.java
deleted file mode 100644
index ca0326a..0000000
--- a/app/src/main/java/com/codedead/deadhash/domain/utils/StreamUtility.java
+++ /dev/null
@@ -1,37 +0,0 @@
-package com.codedead.deadhash.domain.utils;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-public final class StreamUtility {
-
-    private static final int BASE_BUFFER_SIZE = 1024;
-
-    /**
-     * Initialize a new StreamUtility
-     */
-    private StreamUtility() {
-        // Empty constructor
-    }
-
-    /**
-     * Copy a stream
-     *
-     * @param inputStream  The InputStream that should be copied
-     * @param outputStream The OutputSteam that should contain the copied data
-     * @throws IOException When the Stream could not be copied
-     */
-    public static void copyStream(final InputStream inputStream, final OutputStream outputStream) throws IOException {
-        final byte[] bytes = new byte[BASE_BUFFER_SIZE];
-        int count;
-
-        while ((count = inputStream.read(bytes)) != -1) {
-            outputStream.write(bytes, 0, count);
-        }
-
-        inputStream.close();
-        outputStream.flush();
-        outputStream.close();
-    }
-}
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 04f6356..7cbf2e9 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -36,7 +36,6 @@
     <string name="error_playstore">Der Play Store kann nicht geöffnet werden!</string>
     <string name="error_website">Website kann nicht geöffnet werden!</string>
     <string name="dialog_select_file">Wählen Sie eine Datei aus</string>
-    <string name="error_copy_file">Es kann keine Kopie der ausgewählten Datei erstellt werden!</string>
     <string name="error_open_file">Die ausgewählte Datei kann nicht geöffnet werden!</string>
     <string name="error_no_file">Es wurde keine Datei ausgewählt!</string>
     <string name="theme">Thema</string>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index fa19a7d..5727c51 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -36,7 +36,6 @@
     <string name="error_playstore">Impossible d\'ouvrir le Play Store!</string>
     <string name="error_website">Impossible d\'ouvrir le site Web!</string>
     <string name="dialog_select_file">Sélectionner un fichier</string>
-    <string name="error_copy_file">Impossible de créer une copie du fichier sélectionné!</string>
     <string name="error_open_file">Impossible d\'ouvrir le fichier sélectionné!</string>
     <string name="error_no_file">Aucun fichier n\'a été sélectionné!</string>
     <string name="theme">Thème</string>
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index 287fddb..5d26d8c 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -36,7 +36,6 @@
     <string name="error_playstore">Impossibile aprire il Play Store!</string>
     <string name="error_website">Impossibile aprire il sito Web!</string>
     <string name="dialog_select_file">Seleziona un file</string>
-    <string name="error_copy_file">Impossibile creare una copia del file selezionato!</string>
     <string name="error_open_file">Impossibile aprire il file selezionato!</string>
     <string name="error_no_file">Nessun file è stato selezionato!</string>
     <string name="theme">Tema</string>
diff --git a/app/src/main/res/values-night/themes.xml b/app/src/main/res/values-night/themes.xml
index 4578d0b..de5ebea 100644
--- a/app/src/main/res/values-night/themes.xml
+++ b/app/src/main/res/values-night/themes.xml
@@ -19,7 +19,5 @@
         <item name="windowNoTitle">true</item>
     </style>
 
-    <style name="Theme.DeadHash.AppBarOverlay" parent="ThemeOverlay.AppCompat.DayNight.ActionBar" />
-
     <style name="Theme.DeadHash.PopupOverlay" parent="ThemeOverlay.AppCompat.DayNight" />
 </resources>
diff --git a/app/src/main/res/values-nl/strings.xml b/app/src/main/res/values-nl/strings.xml
index ad7390d..8c666ea 100644
--- a/app/src/main/res/values-nl/strings.xml
+++ b/app/src/main/res/values-nl/strings.xml
@@ -36,7 +36,6 @@
     <string name="error_playstore">Kon de Play Store niet openen!</string>
     <string name="error_website">Kon de website niet openen!</string>
     <string name="dialog_select_file">Selecteer een bestand</string>
-    <string name="error_copy_file">Kon geen kopie van het bestand maken!</string>
     <string name="error_open_file">Kon het geselecteerde bestand niet openen!</string>
     <string name="error_no_file">Geen bestand geselecteerd!</string>
     <string name="theme">Thema</string>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index d8095aa..860a555 100644
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -36,7 +36,6 @@
     <string name="error_playstore">Não foi possível abrir a Play Store!</string>
     <string name="error_website">Não foi possível abrir o site!</string>
     <string name="dialog_select_file">Selecione um arquivo</string>
-    <string name="error_copy_file">Não foi possível criar uma cópia do arquivo selecionado!</string>
     <string name="error_open_file">Não foi possível abrir o arquivo selecionado!</string>
     <string name="error_no_file">Nenhum arquivo foi selecionado!</string>
     <string name="theme">Tema</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index e457cb9..40077dd 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -36,7 +36,6 @@
     <string name="error_playstore">Не могу открыть Play Store!</string>
     <string name="error_website">Не могу открыть веб-сайт!</string>
     <string name="dialog_select_file">Выберите файл</string>
-    <string name="error_copy_file">Не могу копировать выбранный файл!</string>
     <string name="error_open_file">Не могу открыть выбранный файл!</string>
     <string name="error_no_file">Не был выбран ни один файл!</string>
     <string name="theme">Тема</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index bd81416..b8863a3 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -49,7 +49,6 @@
     <string name="error_website">Unable to open website!</string>
     <string name="dialog_select_file">Select a file</string>
     <string name="error_open_file">Unable to open the selected file!</string>
-    <string name="error_copy_file">Unable to create a copy of the selected file!</string>
     <string name="error_no_file">No file was selected!</string>
     <string name="theme">Theme</string>
     <string name="ui_header">User interface</string>
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index ef45f57..866a6a2 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -19,7 +19,5 @@
         <item name="windowNoTitle">true</item>
     </style>
 
-    <style name="Theme.DeadHash.AppBarOverlay" parent="ThemeOverlay.AppCompat.DayNight.ActionBar" />
-
     <style name="Theme.DeadHash.PopupOverlay" parent="ThemeOverlay.AppCompat.DayNight" />
 </resources>
diff --git a/build.gradle b/build.gradle
index a0d028f..fb5b7e8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -21,5 +21,5 @@ allprojects {
 }
 
 tasks.register('clean', Delete) {
-    delete rootProject.buildDir
+    delete layout.buildDirectory
 }