diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 3cd0df695e..1a20220bd3 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2014-07-24  Tom Tromey  <tromey@redhat.com>
+
+	* cli/cli-decode.c (help_cmd): Make parameter "const".
+	* cli/cli-decode.h (help_cmd): Update.
+
 2014-07-24  Tom Tromey  <tromey@redhat.com>
 
 	* stack.c (up_silently_base, down_silently_base): Make argument
diff --git a/gdb/cli/cli-decode.c b/gdb/cli/cli-decode.c
index f09b777754..fcd4cebfc6 100644
--- a/gdb/cli/cli-decode.c
+++ b/gdb/cli/cli-decode.c
@@ -936,10 +936,9 @@ apropos_cmd (struct ui_file *stream,
    help_list.  */
 
 void
-help_cmd (char *arg, struct ui_file *stream)
+help_cmd (const char *command, struct ui_file *stream)
 {
   struct cmd_list_element *c;
-  const char *command = arg;
 
   if (!command)
     {
diff --git a/gdb/cli/cli-decode.h b/gdb/cli/cli-decode.h
index c6edc87198..48ed604735 100644
--- a/gdb/cli/cli-decode.h
+++ b/gdb/cli/cli-decode.h
@@ -216,7 +216,7 @@ extern void help_cmd_list (struct cmd_list_element *, enum command_class,
 
 /* Functions that implement commands about CLI commands.  */
 
-extern void help_cmd (char *, struct ui_file *);
+extern void help_cmd (const char *, struct ui_file *);
 
 extern void apropos_cmd (struct ui_file *, struct cmd_list_element *,
                          struct re_pattern_buffer *, char *);