diff --git a/App.config b/App.config
index 56efbc7..ffaf540 100644
--- a/App.config
+++ b/App.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <configuration>
-    <startup> 
+    <startup>
         <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
     </startup>
 </configuration>
\ No newline at end of file
diff --git a/Backup.cs b/Backup.cs
index 68cb251..1de3c6e 100644
--- a/Backup.cs
+++ b/Backup.cs
@@ -4,26 +4,24 @@ using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using System.Security.AccessControl;
-using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 
 namespace AutoBackup
 {
-    class Backup
+    internal class Backup
     {
         volatile public int processCount = 0;
         public List<string> currentStatus = new List<string>();
         public bool windowVisible = false;
 
-
-        List<string> sourceFolders = new List<string>();
-        List<List<string>> destinationFolders = new List<List<string>>();
-        List<ulong[]> optionsList = new List<ulong[]>();
-        List<bool> isRunning = new List<bool>();
-        readonly Stopwatch stopwatch;
-        readonly Timer timer;
-        bool isON = false;
+        private List<string> sourceFolders = new List<string>();
+        private List<List<string>> destinationFolders = new List<List<string>>();
+        private List<ulong[]> optionsList = new List<ulong[]>();
+        private List<bool> isRunning = new List<bool>();
+        private readonly Stopwatch stopwatch;
+        private readonly Timer timer;
+        private bool isON = false;
 
         public Backup()
         {
@@ -60,9 +58,8 @@ namespace AutoBackup
             */
         }
 
-        void CheckIfFilesChanged()
+        private void CheckIfFilesChanged()
         {
-
         }
 
         public void OFF()
@@ -141,14 +138,14 @@ namespace AutoBackup
             }
         }
 
-        void BackupFolder(int index, ulong maxBackupFolders)
+        private void BackupFolder(int index, ulong maxBackupFolders)
         {
             if (index < destinationFolders.Count)
             {
                 Task.Run(() =>
                 {
                     processCount++;
-                    
+
                     foreach (string destinationFolder in destinationFolders[index])
                     {
                         if (Directory.Exists(destinationFolder))
@@ -171,7 +168,7 @@ namespace AutoBackup
                         {
                             MessageBox.Show(destinationFolder + " Does not exist!");
                         }
-                        CopyDirecotory(sourceFolders[index], destinationFolder + "\\Backup " + DateTime.Now.ToString().Replace(":", "-").Replace("/",".").Replace("\\","."), index, GetFileCount(sourceFolders[index]));
+                        CopyDirecotory(sourceFolders[index], destinationFolder + "\\Backup " + DateTime.Now.ToString().Replace(":", "-").Replace("/", ".").Replace("\\", "."), index, GetFileCount(sourceFolders[index]));
                     }
                     processCount--;
 
@@ -180,7 +177,7 @@ namespace AutoBackup
             }
         }
 
-        void DeleteDirectory(string targetDir)
+        private void DeleteDirectory(string targetDir)
         {
             File.SetAttributes(targetDir, FileAttributes.Normal);
 
@@ -201,7 +198,7 @@ namespace AutoBackup
             Directory.Delete(targetDir, false);
         }
 
-        int CopyDirecotory(string sourcePath, string destinationPath, int index, int fileCount, int filesCopied = 0)
+        private int CopyDirecotory(string sourcePath, string destinationPath, int index, int fileCount, int filesCopied = 0)
         {
             if (isON == false) return 0;
             if (!HasReadAccessToFolder(sourcePath)) return 0;
@@ -218,7 +215,7 @@ namespace AutoBackup
                 foreach (string file in Directory.GetFiles(sourcePath))
                 {
                     if (isON == false) return 0;
-                   
+
                     if (windowVisible)
                     {
                         if (fileCount > 0)
@@ -261,7 +258,7 @@ namespace AutoBackup
             return filesCopied;
         }
 
-        int GetFileCount(string path)
+        private int GetFileCount(string path)
         {
             try
             {
@@ -294,7 +291,6 @@ namespace AutoBackup
                 hasAccess = false;
             }
             return hasAccess;
-
         }
     }
-}
+}
\ No newline at end of file
diff --git a/MainForm.cs b/MainForm.cs
index 12db87a..914abb2 100644
--- a/MainForm.cs
+++ b/MainForm.cs
@@ -1,31 +1,27 @@
 using Microsoft.Win32;
 using System;
 using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
 using System.Drawing;
 using System.IO;
 using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using System.Windows.Forms;
 
 namespace AutoBackup
 {
     public partial class MainForm : Form
     {
-        List<string> sourceFolders = new List<string>();
-        List<List<string>> destinationFolders = new List<List<string>>();
-        List<int[]> optionsList = new List<int[]>();
-        readonly Backup backup;
+        private List<string> sourceFolders = new List<string>();
+        private List<List<string>> destinationFolders = new List<List<string>>();
+        private List<int[]> optionsList = new List<int[]>();
+        private readonly Backup backup;
 
-        bool addSourceFolder = true;
-        bool blockWrite = false;
+        private bool addSourceFolder = true;
+        private bool blockWrite = false;
 
-        readonly string localApplicationDataPath;
+        private readonly string localApplicationDataPath;
 
-        const string AppName = "AutoBackup";
-        const string registrykey = "HKEY_CURRENT_USER\\" + AppName;
+        private const string AppName = "AutoBackup";
+        private const string registrykey = "HKEY_CURRENT_USER\\" + AppName;
 
         public MainForm()
         {
@@ -63,7 +59,7 @@ namespace AutoBackup
 
             toolTip.SetToolTip(maxBackupsNumericUpDown, "0 = no limit");
 
-            statusLabel.Location = new Point(13,13);
+            statusLabel.Location = new Point(13, 13);
             //CopyDirecotory("D:\\Test","D:\\TestCopy");
         }
 
@@ -103,7 +99,7 @@ namespace AutoBackup
             statusLabel.Text = textToDisplay;
         }
 
-        void LoadFolders()
+        private void LoadFolders()
         {
             if (!File.Exists(localApplicationDataPath + "\\data.save"))
                 return;
@@ -126,7 +122,7 @@ namespace AutoBackup
                 string options = line.Substring(line.LastIndexOf(">"));
                 line = line.Replace(options, "");
 
-                string o3 = options.Substring(options.LastIndexOf(";")+1);
+                string o3 = options.Substring(options.LastIndexOf(";") + 1);
                 options = options.Remove(options.LastIndexOf(";"));
                 string o2 = options.Substring(options.LastIndexOf(";"));
                 options = options.Replace(o2, "");
@@ -135,7 +131,7 @@ namespace AutoBackup
                 optionsList[index][2] = int.Parse(o3);
                 optionsList[index][1] = int.Parse(o2.Replace(";", ""));
                 optionsList[index][0] = int.Parse(o1);
-                
+
                 while (line.Contains("|"))
                 {
                     string folder = line.Substring(line.LastIndexOf("|"));
@@ -384,7 +380,6 @@ namespace AutoBackup
 
         private void MainForm_Load(object sender, EventArgs e)
         {
-
         }
     }
-}
+}
\ No newline at end of file
diff --git a/Program.cs b/Program.cs
index bb64050..8ccd66e 100644
--- a/Program.cs
+++ b/Program.cs
@@ -1,22 +1,19 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using System.Windows.Forms;
 
 namespace AutoBackup
 {
-    static class Program
+    internal static class Program
     {
         /// <summary>
         /// Der Haupteinstiegspunkt für die Anwendung.
         /// </summary>
         [STAThread]
-        static void Main()
+        private static void Main()
         {
             Application.EnableVisualStyles();
             Application.SetCompatibleTextRenderingDefault(false);
             Application.Run(new MainForm());
         }
     }
-}
+}
\ No newline at end of file
diff --git a/Properties/AssemblyInfo.cs b/Properties/AssemblyInfo.cs
index 4ec782c..2f16892 100644
--- a/Properties/AssemblyInfo.cs
+++ b/Properties/AssemblyInfo.cs
@@ -1,5 +1,4 @@
 using System.Reflection;
-using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 // Allgemeine Informationen über eine Assembly werden über die folgenden
@@ -33,4 +32,4 @@ using System.Runtime.InteropServices;
 // indem Sie "*" wie unten gezeigt eingeben:
 // [assembly: AssemblyVersion("1.0.*")]
 [assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
\ No newline at end of file