diff --git a/avahi.spec b/avahi.spec
index 7b28a3e..9b19d89 100644
--- a/avahi.spec
+++ b/avahi.spec
@@ -186,6 +186,11 @@ rm -rf $RPM_BUILD_ROOT/%{_sysconfdir}/init.d/*
 # Make /etc/avahi/etc/localtime owned by avahi:
 mkdir -p $RPM_BUILD_ROOT/etc/avahi/etc
 touch $RPM_BUILD_ROOT/etc/avahi/etc/localtime
+#
+# Fix avahi-sharp default installation into /usr/lib64 on x86_64:
+if [ ! -e $RPM_BUILD_ROOT/%{_prefix}/lib/mono ] && [ -e  $RPM_BUILD_ROOT/%{_libdir}/mono ]; then
+   mv -f $RPM_BUILD_ROOT/%{_libdir}/mono $RPM_BUILD_ROOT/%{_prefix}/lib; 
+fi
 :;
 
 %clean
@@ -310,12 +315,12 @@ fi
 %defattr(0644, root, root, 0755)
 %{_prefix}/lib/mono/avahi-sharp
 %{_prefix}/lib/mono/gac/avahi-sharp
-%{_prefix}/lib/pkgconfig/avahi-sharp.pc
+%{_libdir}/lib/pkgconfig/avahi-sharp.pc
 %endif
 
 %changelog
 * Thu Mar 16 2006 Jason Vas Dias <jvdias@redhat.com> - 0.6.9-6
-- Fix bug 185692: install avahi-sharp into %{prefix}/lib, not %{_libdir}
+- Fix bug 185692: install avahi-sharp into %{_prefix}/lib, not %{_libdir}
 
 * Thu Mar 09 2006 Jason Vas Dias <jvdias@redhat.com> - 0.6.9-4
 - fix scriptlet error introduced by last fix: