diff --git a/virt-v2v.spec b/virt-v2v.spec
index 6b12b93..5436f27 100644
--- a/virt-v2v.spec
+++ b/virt-v2v.spec
@@ -138,6 +138,12 @@ Requires:      nbdkit-vddk-plugin
 # For rhsrvany.exe, used to install firstboot scripts in Windows guests.
 Requires:      mingw32-srvany >= 1.0-13
 
+# On RHEL, virtio-win should be used to install virtio drivers
+# and qemu-ga in converted guests.  (RHBZ#1972644)
+%if 0%{?rhel}
+Requires:      virtio-win
+%endif
+
 
 %description
 Virt-v2v converts a single guest from a foreign hypervisor to run on
@@ -291,6 +297,7 @@ rm $RPM_BUILD_ROOT%{_datadir}/bash-completion/completions/virt-v2v-copy-to-local
 %changelog
 * Wed Jun 16 2021 Richard W.M. Jones <rjones@redhat.com> - 1:1.45.1-1
 - New upstream development version 1.45.1.
+- Require virtio-win on RHEL (RHBZ#1972644).
 
 * Thu Jun 10 2021 Richard W.M. Jones <rjones@redhat.com> - 1:1.44.0-2
 - nbdkit-vddk-plugin dep only exists on x86-64.