diff --git a/ChangeLog b/ChangeLog
index 8aa1498..bfac7ee 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2015-11-30  Natalia Portillo  <claunia@claunia.com>
+
+	* FletcherContext.cs:
+	  Disabled Fletcher as it is abnormally slow.
+
 2015-10-19  Natalia Portillo  <claunia@claunia.com>
 
 	* DiscImageChef.Checksums.csproj:
diff --git a/FletcherContext.cs b/FletcherContext.cs
index 3c60d63..f433a56 100644
--- a/FletcherContext.cs
+++ b/FletcherContext.cs
@@ -35,6 +35,9 @@ Implements Fletcher-32 and Fletcher-16 algorithms.
 Copyright (C) 2011-2015 Claunia.com
 ****************************************************************************/
 //$Id$
+
+// Disabled because the speed is abnormally slow
+/*
 using System;
 using System.Text;
 using System.IO;
@@ -455,4 +458,4 @@ namespace DiscImageChef.Checksums
         }
     }
 }
-
+*/