diff --git a/sg3_utils.spec b/sg3_utils.spec
index d2f4d7b..22a1114 100644
--- a/sg3_utils.spec
+++ b/sg3_utils.spec
@@ -49,8 +49,11 @@ make
 if [ "$RPM_BUILD_ROOT" != "/" ]; then
         rm -rf $RPM_BUILD_ROOT
 fi
-%makeinstall
-#make install PREFIX=$RPM_BUILD_ROOT/usr
+%ifarch sparc64 ppc64 s390x x86_64
+make install PREFIX=$RPM_BUILD_ROOT/usr LIBDIR=$RPM_BUILD_ROOT/usr/lib64
+%else
+make install PREFIX=$RPM_BUILD_ROOT/usr
+%endif
 
 %clean
 rm -rf $RPM_BUILD_ROOT
@@ -74,7 +77,8 @@ rm -rf $RPM_BUILD_ROOT
  
 %changelog
 * Fri Feb 10 2006 Phil Knirsch <pknirsch@redhat.com> - 1.19-1
-- Update to sg3_utils-1.19
+- Update to sg3_utils-1.19.
+- Fixed rebuild problem on 64bit archs.
 
 * Tue Feb 07 2006 Jesse Keating <jkeating@redhat.com> - 1.17-1.1
 - rebuilt for new gcc4.1 snapshot and glibc changes