diff --git a/ChangeLog b/ChangeLog
index ac0feaa8d1..378d240bad 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Aug 28 11:24:20 2013  Michal Rokos  <michal@rokos.cz>
+
+	* configure.in (sys/pstat.h): fix missing header check for
+	  missing/setproctitle.c on HP-UX.  [ruby-core:56644] [Bug #8792]
+
 Wed Aug 28 04:54:33 2013  Eric Hodel  <drbrain@segment7.net>
 
 	* ext/openssl/ossl_ssl.c (ossl_ssl_read):  Replace duplicate
diff --git a/configure.in b/configure.in
index 1cc84bea11..7a39da8bf0 100644
--- a/configure.in
+++ b/configure.in
@@ -1730,6 +1730,7 @@ AS_CASE(["$target_os"],
 [aix* | k*bsd*-gnu | kopensolaris*-gnu | linux* | darwin*], [AC_DEFINE(SPT_TYPE,SPT_REUSEARGV)],
 [hpux*], [AC_DEFINE(SPT_TYPE,SPT_PSTAT) ],
 [])
+AC_CHECK_HEADERS(sys/pstat.h)
 
 
 AC_CACHE_CHECK(for signbit, rb_cv_have_signbit,