diff --git a/Doc/changelog.docu b/Doc/changelog.docu
index 561c84f6..081924b2 100644
--- a/Doc/changelog.docu
+++ b/Doc/changelog.docu
@@ -6,13 +6,19 @@
 
 <!-- --------------------------------------------------------------------- -->
 
-<tr valign=top><td><b>4.1</b> (2015/07/27,Rev.1316)</td><td>
+<tr valign=top><td><b>4.1</b> (2015/07/27,Rev.1318)</td><td>
 <b>Core</b>
 <ul>
 <li>Fixed bug in polymesh normal computation. Added more unittests for normal computation.</li>
 <li>Get rid of some windows preprocessor warnings</li>
 </ul>
 
+<b>IO</b>
+<ul>
+<li>Options: Fixed bad enum</li>
+</ul>
+
+
 <b>Build System</b>
 <ul>
 <li>Removed fixbundle calls if not building apps.</li>
diff --git a/src/OpenMesh/Core/IO/Options.hh b/src/OpenMesh/Core/IO/Options.hh
index 2a9f17e9..f2667258 100644
--- a/src/OpenMesh/Core/IO/Options.hh
+++ b/src/OpenMesh/Core/IO/Options.hh
@@ -105,7 +105,7 @@ public:
       Binary         = 0x0001, ///< Set binary mode for r/w
       MSB            = 0x0002, ///< Assume big endian byte ordering
       LSB            = 0x0004, ///< Assume little endian byte ordering
-      Swap           = 0x0006, ///< Swap byte order in binary mode
+      Swap           = 0x0008, ///< Swap byte order in binary mode
       VertexNormal   = 0x0010, ///< Has (r) / store (w) vertex normals
       VertexColor    = 0x0020, ///< Has (r) / store (w) vertex colors
       VertexTexCoord = 0x0040, ///< Has (r) / store (w) texture coordinates