diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index efda433051..bcc8c0e585 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2007-12-17  Joel Brobecker  <brobecker@adacore.com>
+
+	* language.h (enum exp_opcode): Comment out this declaration,
+	undoing the previous change.
+
 2007-12-17  Luis Machado  <luisgpm@br.ibm.com>
 
         * breakpoint.c: (watch_command_1): Parse additional optional
diff --git a/gdb/language.h b/gdb/language.h
index 22e6a46b5d..5c86f6abca 100644
--- a/gdb/language.h
+++ b/gdb/language.h
@@ -30,7 +30,8 @@ struct objfile;
 struct frame_info;
 struct expression;
 struct ui_file;
-enum exp_opcode;
+
+/* enum exp_opcode;     ANSI's `wisdom' didn't include forward enum decls. */
 
 /* This used to be included to configure GDB for one or more specific
    languages.  Now it is left out to configure for all of them.  FIXME.  */