diff --git a/CSharpFileExplorer/IconLoader.cs b/CSharpFileExplorer/IconLoader.cs
index 50fdf74..f63ceb1 100644
--- a/CSharpFileExplorer/IconLoader.cs
+++ b/CSharpFileExplorer/IconLoader.cs
@@ -3,13 +3,13 @@
 
 namespace CSharpFileExplorer
 {
-    class IconLoader
+    internal class IconLoader
     {
         public static Icon GetStockIcon(NativeMethods.SHSTOCKICONID siid)
         {
-            NativeMethods.SHSTOCKICONINFO stockIconInfo = new NativeMethods.SHSTOCKICONINFO();
-            stockIconInfo.cbSize = (uint)Marshal.SizeOf<NativeMethods.SHSTOCKICONINFO>();
-            NativeMethods.SHGetStockIconInfo(siid, (uint)NativeMethods.SHGFI.Icon, ref stockIconInfo);
+            var stockIconInfo = new NativeMethods.SHSTOCKICONINFO();
+            stockIconInfo.cbSize = (uint) Marshal.SizeOf<NativeMethods.SHSTOCKICONINFO>();
+            NativeMethods.SHGetStockIconInfo(siid, (uint) NativeMethods.SHGFI.Icon, ref stockIconInfo);
             var icon = Icon.FromHandle(stockIconInfo.hIcon).ToBitmap(); //convert to bitmap to make it transparent
             icon.MakeTransparent();
             NativeMethods.DestroyIcon(stockIconInfo.hIcon);
@@ -18,12 +18,14 @@ public static Icon GetStockIcon(NativeMethods.SHSTOCKICONID siid)
 
         public static Icon GetFileTypeIcon(string filetype)
         {
-            NativeMethods.SHFILEINFO iconInfo = new NativeMethods.SHFILEINFO();
-            NativeMethods.SHGetFileInfo(filetype, 256, ref iconInfo, 0, (uint)(NativeMethods.SHGFI.Icon | NativeMethods.SHGFI.SmallIcon | NativeMethods.SHGFI.UseFileAttributes));
+            var iconInfo = new NativeMethods.SHFILEINFO();
+            NativeMethods.SHGetFileInfo(filetype, 256, ref iconInfo, 0,
+                (uint) (NativeMethods.SHGFI.Icon | NativeMethods.SHGFI.SmallIcon |
+                        NativeMethods.SHGFI.UseFileAttributes));
             var icon = Icon.FromHandle(iconInfo.hIcon).ToBitmap();
             icon.MakeTransparent();
             NativeMethods.DestroyIcon(iconInfo.hIcon);
             return Icon.FromHandle(icon.GetHicon());
         }
     }
-}
+}
\ No newline at end of file
diff --git a/CSharpFileExplorer/NativeMethods.cs b/CSharpFileExplorer/NativeMethods.cs
index 54448a3..0b2742f 100644
--- a/CSharpFileExplorer/NativeMethods.cs
+++ b/CSharpFileExplorer/NativeMethods.cs
@@ -3,43 +3,8 @@
 
 namespace CSharpFileExplorer
 {
-    class NativeMethods
+    internal class NativeMethods
     {
-        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
-        public struct SHSTOCKICONINFO
-        {
-            public uint cbSize;
-            public IntPtr hIcon;
-            public int iSysIconIndex;
-            public int iIcon;
-            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
-            public string szPath;
-        }
-
-        [DllImport("shell32.dll")]
-        public static extern int SHGetStockIconInfo(SHSTOCKICONID siid, uint uFlags, ref SHSTOCKICONINFO psii);
-
-        [DllImport("user32.dll")]
-        public static extern bool DestroyIcon(IntPtr handle);
-
-        [DllImport("uxtheme.dll", ExactSpelling = true, CharSet = CharSet.Unicode)]
-        public static extern int SetWindowTheme(IntPtr hwnd, string pszSubAppName, string pszSubIdList);
-
-        [DllImport("shell32.dll", CharSet = CharSet.Auto)]
-        public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbFileInfo, uint uFlags);
-
-        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
-        public struct SHFILEINFO
-        {
-            public IntPtr hIcon;
-            public int iIcon;
-            public uint dwAttributes;
-            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
-            public string szDisplayName;
-            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
-            public string szTypeName;
-        }
-
         [Flags]
         public enum SHGFI : uint
         {
@@ -60,7 +25,7 @@ public enum SHGFI : uint
             PIDL = 0x000000008,
             UseFileAttributes = 0x000000010,
             AddOverlays = 0x000000020,
-            OverlayIndex = 0x000000040,
+            OverlayIndex = 0x000000040
         }
 
         public enum SHSTOCKICONID : uint
@@ -160,5 +125,44 @@ public enum SHSTOCKICONID : uint
             SIID_CLUSTEREDDRIVE = 140,
             SIID_MAX_ICONS = 175
         }
+
+        [DllImport("shell32.dll")]
+        public static extern int SHGetStockIconInfo(SHSTOCKICONID siid, uint uFlags, ref SHSTOCKICONINFO psii);
+
+        [DllImport("user32.dll")]
+        public static extern bool DestroyIcon(IntPtr handle);
+
+        [DllImport("uxtheme.dll", ExactSpelling = true, CharSet = CharSet.Unicode)]
+        public static extern int SetWindowTheme(IntPtr hwnd, string pszSubAppName, string pszSubIdList);
+
+        [DllImport("shell32.dll", CharSet = CharSet.Auto)]
+        public static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi,
+            uint cbFileInfo, uint uFlags);
+
+        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
+        public struct SHSTOCKICONINFO
+        {
+            public uint cbSize;
+            public IntPtr hIcon;
+            public int iSysIconIndex;
+            public int iIcon;
+
+            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
+            public string szPath;
+        }
+
+        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
+        public struct SHFILEINFO
+        {
+            public IntPtr hIcon;
+            public int iIcon;
+            public uint dwAttributes;
+
+            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
+            public string szDisplayName;
+
+            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
+            public string szTypeName;
+        }
     }
-}
+}
\ No newline at end of file