diff --git a/roles/copr/backend/files/provision/files/enable-swap.sh b/roles/copr/backend/files/provision/files/enable-swap.sh
index 6eef44e75a..4f231be263 100644
--- a/roles/copr/backend/files/provision/files/enable-swap.sh
+++ b/roles/copr/backend/files/provision/files/enable-swap.sh
@@ -8,9 +8,10 @@ swap_device=
 if test -e /dev/xvda1 && test -e /dev/nvme0n1; then
     swap_device=/dev/nvme0n1
 elif test -e /dev/nvme1n1; then
+    # AWS machine
     swap_device=/dev/nvme1n1
 elif test -e /dev/vdb; then
-    # libvirt machine
+    # libvirt machine, and IBM Cloud s390x
     swap_device=/dev/vdb
     part_suffix=
 fi