diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index da4e97202..1a5219883 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+2005-09-14  Christopher Faylor  <cgf@timesys.com>
+
+	* sigproc.h: Protect declaration so that it only happens when
+	__INSIDE_CYGWIN__.
+
 2005-09-14  Christopher Faylor  <cgf@timesys.com>
 
 	* exceptions.cc (sigtid): Remove declaration.
diff --git a/winsup/cygwin/sigproc.h b/winsup/cygwin/sigproc.h
index a8895df7a..a53da0c59 100644
--- a/winsup/cygwin/sigproc.h
+++ b/winsup/cygwin/sigproc.h
@@ -73,7 +73,9 @@ int __stdcall proc_subproc (DWORD, DWORD) __attribute__ ((regparm (2)));
 class _pinfo;
 void __stdcall proc_terminate ();
 void __stdcall sigproc_init ();
+#ifdef __INSIDE_CYGWIN__
 void __stdcall sigproc_terminate (enum exit_states);
+#endif
 bool __stdcall pid_exists (pid_t) __attribute__ ((regparm(1)));
 int __stdcall sig_send (_pinfo *, siginfo_t&, class _cygtls *tls = NULL) __attribute__ ((regparm (3)));
 int __stdcall sig_send (_pinfo *, int) __attribute__ ((regparm (2)));