diff --git a/include/ChangeLog b/include/ChangeLog
index eda9aaddf..6e016e647 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2009-11-18  Alan Modra  <amodra@bigpond.net.au>
+
+	* alloca-conf.h: Clarify comment.
+
 2009-11-06  Jonas Maebe  <jonas.maebe@elis.ugent.be>
 
 	Add DWARF attribute value for the "Borland fastcall" calling
diff --git a/include/alloca-conf.h b/include/alloca-conf.h
index 9ba77953d..628a5987e 100644
--- a/include/alloca-conf.h
+++ b/include/alloca-conf.h
@@ -15,7 +15,8 @@
 #  if defined _AIX
 /* Indented so that pre-ansi C compilers will ignore it, rather than
    choke on it.  Some versions of AIX require this to be the first
-   thing in the file except for comments and preprocessor directives.  */
+   thing seen by the compiler except for comments and preprocessor
+   directives.  */
     #pragma alloca
 #  else
 #   if defined _MSC_VER && !defined C_ALLOCA