diff --git a/nbdkit.spec b/nbdkit.spec
index f12ebe4..227ff44 100644
--- a/nbdkit.spec
+++ b/nbdkit.spec
@@ -731,7 +731,7 @@ export PYTHON=%{__python3}
 %else
     --without-libguestfs \
 %endif
-%ifarch %{complete_test_arches}
+%ifarch !0%{?rhel} && 0%{?have_libguestfs} && %{complete_test_arches}
     --enable-libguestfs-tests \
 %else
     --disable-libguestfs-tests \