diff --git a/libguestfs.spec b/libguestfs.spec
index c59d264..6285410 100644
--- a/libguestfs.spec
+++ b/libguestfs.spec
@@ -4,10 +4,11 @@
 %if %{defined libguestfs_runtests}
 %global runtests %{libguestfs_runtests}
 %else
-%ifnarch %{ix86} %{arm} ppc ppc64
+%ifnarch %{arm} %{ix86} ppc ppc64 x86-64
 %global runtests 1
 %else
 # Disabled on 32 bit x86.  Fails with current rawhide, unclear why.
+# Disabled on x86-64, pending xz-static change in supermin: RHBZ#547011.
 # Disabled on arm, see RHBZ#1066581.
 # Disabled on ppc, ppc64 (secondary arches), see RHBZ#1036742.
 %global runtests 0
@@ -25,7 +26,7 @@ Summary:       Access and modify virtual machine disk images
 Name:          libguestfs
 Epoch:         1
 Version:       1.27.11
-Release:       1%{?dist}
+Release:       2%{?dist}
 License:       LGPLv2+
 
 # Source and patches.
@@ -1188,7 +1189,7 @@ mv $RPM_BUILD_ROOT/lib/udev/rules.d/99-guestfs-serial.rules \
 
 
 %changelog
-* Fri May 16 2014 Richard W.M. Jones <rjones@redhat.com> - 1:1.27.11-1
+* Fri May 16 2014 Richard W.M. Jones <rjones@redhat.com> - 1:1.27.11-2
 - New upstream version 1.27.11.
 
 * Fri May 16 2014 Richard W.M. Jones <rjones@redhat.com> - 1:1.27.10-1