diff --git a/ChangeLog b/ChangeLog
index 5762b8d..5234cf6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2017-05-27  Natalia Portillo  <claunia@claunia.com>
+
+	* CompareBytes.cs:
+	* DiscImageChef.Helpers.csproj: Refactor: Moved CompareBytes
+	  to Helpers.
+
 2017-05-19  Natalia Portillo  <claunia@claunia.com>
 
 	* Swapping.cs:
diff --git a/CompareBytes.cs b/CompareBytes.cs
new file mode 100644
index 0000000..74413d8
--- /dev/null
+++ b/CompareBytes.cs
@@ -0,0 +1,66 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : CompareBytes.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Component
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Description
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This library is free software; you can redistribute it and/or modify
+//     it under the terms of the GNU Lesser General Public License as
+//     published by the Free Software Foundation; either version 2.1 of the
+//     License, or (at your option) any later version.
+//
+//     This library 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
+//     Lesser General Public License for more details.
+//
+//     You should have received a copy of the GNU Lesser General Public
+//     License along with this library; if not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2011-2017 Natalia Portillo
+// ****************************************************************************/
+
+namespace DiscImageChef
+{
+    public static partial class ArrayHelpers
+    {
+        public static void CompareBytes(out bool different, out bool sameSize, byte[] compareArray1, byte[] compareArray2)
+        {
+            different = false;
+            sameSize = true;
+
+            long leastBytes;
+            if(compareArray1.LongLength < compareArray2.LongLength)
+            {
+                sameSize = false;
+                leastBytes = compareArray1.LongLength;
+            }
+            else if(compareArray1.LongLength > compareArray2.LongLength)
+            {
+                sameSize = false;
+                leastBytes = compareArray2.LongLength;
+            }
+            else
+                leastBytes = compareArray1.LongLength;
+
+            for(long i = 0; i < leastBytes; i++)
+            {
+                if(compareArray1[i] != compareArray2[i])
+                {
+                    different = true;
+                    return;
+                }
+            }
+        }
+    }
+}
diff --git a/DiscImageChef.Helpers.csproj b/DiscImageChef.Helpers.csproj
index 832c00a..13ee39b 100644
--- a/DiscImageChef.Helpers.csproj
+++ b/DiscImageChef.Helpers.csproj
@@ -44,6 +44,7 @@
     <Compile Include="Swapping.cs" />
     <Compile Include="ArrayIsEmpty.cs" />
     <Compile Include="BigEndianMarshal.cs" />
+    <Compile Include="CompareBytes.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>