diff --git a/riscos/gui.c b/riscos/gui.c
index 4c8f3154b..048efb686 100644
--- a/riscos/gui.c
+++ b/riscos/gui.c
@@ -82,9 +82,6 @@
 #include "riscos/menus.h"
 #include "riscos/message.h"
 #include "riscos/options.h"
-#ifdef WITH_PLUGIN
-#include "riscos/plugin.h"
-#endif
 #include "riscos/print.h"
 #include "riscos/query.h"
 #include "riscos/save.h"
diff --git a/riscos/plugin.h b/riscos/plugin.h
deleted file mode 100644
index 87b59edca..000000000
--- a/riscos/plugin.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright 2003 John M Bell <jmb202@ecs.soton.ac.uk>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef _NETSURF_RISCOS_PLUGIN_H_
-#define _NETSURF_RISCOS_PLUGIN_H_
-
-#include "utils/config.h"
-#ifdef WITH_PLUGIN
-
-#include <stdbool.h>
-#include "oslib/plugin.h"
-#include "oslib/wimp.h"
-
-/* message handlers */
-void plugin_open_msg(wimp_message *message);
-void plugin_opening(wimp_message *message);
-void plugin_close_msg(wimp_message *message);
-void plugin_closed(wimp_message *message);
-void plugin_reshape_request(wimp_message *message);
-void plugin_status(wimp_message *message);
-void plugin_stream_new(wimp_message *message);
-void plugin_stream_written(wimp_message *message);
-void plugin_url_access(wimp_message *message);
-
-#endif /* WITH_PLUGIN */
-
-#endif