diff --git a/ppc64-diag.spec b/ppc64-diag.spec
index 5c137c3..68d495e 100644
--- a/ppc64-diag.spec
+++ b/ppc64-diag.spec
@@ -1,6 +1,6 @@
 Name:           ppc64-diag
 Version:        2.4.2
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Linux for Power Platform Diagnostics
 URL:            http://sourceforge.net/projects/linux-diag/files/ppc64-diag/
 Group:          System Environment/Base
@@ -73,7 +73,7 @@ rm -rf $RPM_BUILD_ROOT
 
 %post
 # Post-install script --------------------------------------------------
-%{_datadir}/%{name}/ppc64_diag_setup --register >/dev/null
+%{_libexecdir}/%{name}/ppc64_diag_setup --register >/dev/null
 if [ "$1" = "2" ]; then # upgrade
     %{_libexecdir}/%{name}/rtas_errd restart
 fi
@@ -82,7 +82,7 @@ fi
 # Pre-uninstall script -------------------------------------------------
 if [ "$1" = "0" ]; then # last uninstall
     %{_libexecdir}/%{name}/rtas_errd stop
-    %{_datadir}/%{name}/ppc64_diag_setup --unregister >/dev/null
+    %{_libexecdir}/%{name}/ppc64_diag_setup --unregister >/dev/null
 fi
 
 %triggerin -- librtas
@@ -93,6 +93,9 @@ fi
 
 
 %changelog
+* Thu Sep 22 2011 Karsten Hopp <karsten@redhat.com> 2.4.2-4
+- fix preun and post install scriptlets
+
 * Fri Sep 09 2011 Karsten Hopp <karsten@redhat.com> 2.4.2-3
 - add buildrequirement systemd-units for _unitdir rpm macro
 - move helper scripts to libexecdir/ppc64-diag