diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 74ba6377ca..a460d56eed 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2001-02-07  Andrew Cagney  <ac131313@redhat.com>
+
+	From Mark Kettenis <kettenis@gnu.org>:
+	* event-top.h [!STOP_SIGNAL]: #include <signal.h>.
+
 2001-02-07  Andrew Cagney  <ac131313@redhat.com>
 
 	* remote-sim.c (dump_mem): Cleanup printf format argument.
diff --git a/gdb/event-top.h b/gdb/event-top.h
index 36b2098178..b719549bd7 100644
--- a/gdb/event-top.h
+++ b/gdb/event-top.h
@@ -1,5 +1,5 @@
 /* Definitions used by GDB event-top.c.
-   Copyright 1999 Free Software Foundation, Inc.
+   Copyright 1999, 2001 Free Software Foundation, Inc.
    Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
 
    This file is part of GDB.
@@ -78,6 +78,7 @@ extern void set_async_prompt (char *args, int from_tty, struct cmd_list_element
 
 /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT.  */
 #ifndef STOP_SIGNAL
+#include <signal.h>
 #ifdef SIGTSTP
 #define STOP_SIGNAL SIGTSTP
 extern void handle_stop_sig (int sig);