diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog
index 51dfba81b88..979e789c179 100644
--- a/libgfortran/ChangeLog
+++ b/libgfortran/ChangeLog
@@ -1,3 +1,7 @@
+2009-08-14  Janne Blomqvist  <jb@gcc.gnu.org>
+
+	* fmain.c: Add comment saying file is deprecated.
+
 2009-08-14  Janne Blomqvist  <jb@gcc.gnu.org>
 
 	PR libfortran/40863
diff --git a/libgfortran/fmain.c b/libgfortran/fmain.c
index c59f319f7d8..a99263cc510 100644
--- a/libgfortran/fmain.c
+++ b/libgfortran/fmain.c
@@ -1,3 +1,6 @@
+/* Note that this file is not used as of GFortran 4.5, and exists here
+   only for backwards compatibility.  */
+
 #include "libgfortran.h"
 
 /* The main Fortran program actually is a function, called MAIN__.