diff --git a/dirac.changes b/dirac.changes
index 50937bb..3cf8d57 100644
--- a/dirac.changes
+++ b/dirac.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Nov 25 10:26:27 CET 2008 - ro@suse.de
+
+- do not buildrequire valgrind on ia64 s390 s390x
+  (does not exist on these platforms)
+
 -------------------------------------------------------------------
 Thu Nov  6 10:40:56 CET 2008 - sbrabec@suse.cz
 
diff --git a/dirac.spec b/dirac.spec
index c33cbf7..c3b8aad 100644
--- a/dirac.spec
+++ b/dirac.spec
@@ -20,14 +20,17 @@
 
 Name:           dirac
 Version:        1.0.0
-Release:        2
+Release:        3
 Url:            http://diracvideo.org/
 Group:          Productivity/Multimedia/Video/Editors and Convertors
 License:        MOZILLA PUBLIC LICENSE (MPL/NPL)
 Summary:        Dirac Video Codec
 Source:         %{name}-%{version}.tar.bz2
 BuildRequires:  gcc-c++ libstdc++-devel
-BuildRequires:  libcppunit-devel valgrind-devel
+BuildRequires:  libcppunit-devel
+%ifnarch ia64 s390 s390x
+BuildRequires:  valgrind-devel
+%endif
 BuildRequires:  doxygen fdupes graphviz-gd texlive-latex
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
@@ -255,5 +258,8 @@ ACLOCAL="aclocal -I m4" autoreconf -f -i
 %{_includedir}/dirac
 
 %changelog
+* Tue Nov 25 2008 ro@suse.de
+- do not buildrequire valgrind on ia64 s390 s390x
+  (does not exist on these platforms)
 * Thu Nov 06 2008 sbrabec@suse.cz
 - New SuSE package (bnc#441855).