diff --git a/EPPlus/ExcelWorkbook.cs b/EPPlus/ExcelWorkbook.cs
index ae05fc7..06f313b 100644
--- a/EPPlus/ExcelWorkbook.cs
+++ b/EPPlus/ExcelWorkbook.cs
@@ -4,7 +4,7 @@
  * EPPlus provides server-side generation of Excel 2007/2010 spreadsheets.
  * See http://www.codeplex.com/EPPlus for details.
  *
- * Copyright (C) 2011  Jan Källman
+ * Copyright (C) 2011  Jan Källman
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -26,8 +26,8 @@
  * 
  * Author							Change						Date
  * ******************************************************************************
- * Jan Källman		    Initial Release		       2011-01-01
- * Jan Källman		    License changed GPL-->LGPL 2011-12-27
+ * Jan Källman		    Initial Release		       2011-01-01
+ * Jan Källman		    License changed GPL-->LGPL 2011-12-27
  *******************************************************************************/
 using System;
 using System.Xml;
@@ -890,7 +890,7 @@ private void SetNameElement(ExcelNamedRange name, XmlElement elem)
 		{
 			if (name.IsName)
 			{
-				if (string.IsNullOrEmpty(name.NameFormula))
+				if (string.IsNullOrEmpty(name.NameFormula)&& name.NameValue != null)
 				{
 					if ((name.NameValue.GetType().IsPrimitive || name.NameValue is double || name.NameValue is decimal))
 					{