diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index aa50dc9f5bb..910580df2d0 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2017-09-23  Tom Tromey  <tom@tromey.com>
+
+	* defs.h (make_cleanup_override_quit_handler): Don't declare.
+
 2017-09-22  Tom Tromey  <tom@tromey.com>
 
 	* utils.c (class scoped_input_handler) <m_quit_handler>: Change
diff --git a/gdb/defs.h b/gdb/defs.h
index af9e32e5323..077a8168052 100644
--- a/gdb/defs.h
+++ b/gdb/defs.h
@@ -155,12 +155,6 @@ extern void set_quit_flag (void);
 typedef void (quit_handler_ftype) (void);
 extern quit_handler_ftype *quit_handler;
 
-/* Override the current quit handler.  Sets NEW_QUIT_HANDLER as
-   current quit handler, and installs a cleanup that when run restores
-   the previous quit handler.  */
-struct cleanup *
-  make_cleanup_override_quit_handler (quit_handler_ftype *new_quit_handler);
-
 /* The default quit handler.  Checks whether Ctrl-C was pressed, and
    if so: