diff --git a/prism/src/prism/PrismDevNullLog.java b/prism/src/prism/PrismDevNullLog.java
new file mode 100644
index 00000000..2ba42b47
--- /dev/null
+++ b/prism/src/prism/PrismDevNullLog.java
@@ -0,0 +1,92 @@
+//==============================================================================
+//	
+//	Copyright (c) 2002-
+//	Authors:
+//	* Dave Parker <david.parker@comlab.ox.ac.uk> (University of Oxford)
+//	
+//------------------------------------------------------------------------------
+//	
+//	This file is part of PRISM.
+//	
+//	PRISM is free software; you can redistribute it and/or modify
+//	it under the terms of the GNU General Public License as published by
+//	the Free Software Foundation; either version 2 of the License, or
+//	(at your option) any later version.
+//	
+//	PRISM 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 General Public License for more details.
+//	
+//	You should have received a copy of the GNU General Public License
+//	along with PRISM; if not, write to the Free Software Foundation,
+//	Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//	
+//==============================================================================
+
+package prism;
+
+public class PrismDevNullLog extends PrismLog
+{
+	public PrismDevNullLog()
+	{
+	}
+
+	public boolean ready()
+	{
+		return true;
+	}
+
+	public long getFilePointer()
+	{
+		return 0;
+	}
+
+	public void flush()
+	{
+	}
+
+	public void close()
+	{
+	}
+	
+	// Basic print methods
+	
+	public void print(boolean b)
+	{
+	}
+
+	public void print(char c)
+	{
+	}
+
+	public void print(double d)
+	{
+	}
+
+	public void print(float f)
+	{
+	}
+
+	public void print(int i)
+	{
+	}
+
+	public void print(long l)
+	{
+	}
+
+	public void print(Object obj)
+	{
+	}
+
+	public void print(String s)
+	{
+	}
+
+	public void println()
+	{
+	}
+}
+
+//------------------------------------------------------------------------------