diff --git a/DiscImageChef.CommonTypes.csproj b/DiscImageChef.CommonTypes.csproj
index 7800e7082..40460a732 100644
--- a/DiscImageChef.CommonTypes.csproj
+++ b/DiscImageChef.CommonTypes.csproj
@@ -49,6 +49,7 @@
     <Compile Include="..\CICMMetadata\dotnet\cicm.cs">
       <Link>Metadata/cicm.cs</Link>
     </Compile>
+    <Compile Include="Enums\BitEndian.cs" />
     <Compile Include="Enums\DeviceType.cs" />
     <Compile Include="Enums\ErrorNumber.cs" />
     <Compile Include="Enums\Images.cs" />
diff --git a/Enums/BitEndian.cs b/Enums/BitEndian.cs
new file mode 100644
index 000000000..1cae44872
--- /dev/null
+++ b/Enums/BitEndian.cs
@@ -0,0 +1,58 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : BitEndian.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Common types.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Defines enumerations of bit endianness.
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     Permission is hereby granted, free of charge, to any person obtaining a
+//     copy of this software and associated documentation files (the
+//     "Software"), to deal in the Software without restriction, including
+//     without limitation the rights to use, copy, modify, merge, publish,
+//     distribute, sublicense, and/or sell copies of the Software, and to
+//     permit persons to whom the Software is furnished to do so, subject to
+//     the following conditions:
+//
+//     The above copyright notice and this permission notice shall be included
+//     in all copies or substantial portions of the Software.
+//
+//     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+//     OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+//     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+//     CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+//     TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+//     SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2011-2019 Natalia Portillo
+// ****************************************************************************/
+namespace DiscImageChef.CommonTypes.Enums
+{
+    /// <summary>
+    /// Describes the endianness of bits on a data structure
+    /// </summary>
+    public enum BitEndian
+    {
+        /// <summary>
+        /// Little-endian, or least significant bit
+        /// </summary>
+        Little,
+        /// <summary>
+        /// Big-endian, or most significant bit
+        /// </summary>
+        Big,
+        /// <summary>
+        /// PDP-11 endian, little endian except for 32-bit integers where the 16 halves are swapped between them
+        /// </summary>
+        Pdp
+    }
+}
\ No newline at end of file