diff --git a/ChangeLog b/ChangeLog
index e4b919775..8b2a84341 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2010-09-08  Robert Larice
+ * src/include/const.h :
+    rename include file wrapper, #ifndef CONST  ->  CONST_H
+
 2010-09-08  Robert Larice
  * src/frontend/display.c ,
  * src/include/ftedev.h :
diff --git a/src/include/const.h b/src/include/const.h
index 6c8ec45c4..61df9e20b 100644
--- a/src/include/const.h
+++ b/src/include/const.h
@@ -4,8 +4,8 @@ Author: 1985 Thomas L. Quarles
 **********/
 /*
  */
-#ifndef CONST
-#define CONST
+#ifndef CONST_H
+#define CONST_H
 
 #define CHARGE (1.6021918e-19)
 #define CONSTCtoK (273.15)
@@ -20,4 +20,4 @@ Author: 1985 Thomas L. Quarles
     extern double CONSTKoverQ;
     extern double CONSTe;
 
-#endif /*CONST*/
+#endif