diff --git a/src/behave/surface.cpp b/src/behave/surface.cpp
index 9804361..b1ee22c 100644
--- a/src/behave/surface.cpp
+++ b/src/behave/surface.cpp
@@ -3,7 +3,7 @@
 * Project:  CodeBlocks
 * Purpose:  Class for handling surface fire behavior based on the Facade OOP
 *           Design Pattern and using the Rothermel spread model
-* Author:   William Chatham <wchatham@fs.fed.us>
+* Author:   William Chatham <wchatham@fs.fed.us>, old email
 * Credits:  Some of the code in this file is, in part or in whole, from
 *           BehavePlus5 source originally authored by Collin D. Bevins and is
 *           used with or without modification.