diff --git a/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/underlay.yaml b/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/underlay.yaml
index 06f3a5f..34760e5 100644
--- a/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/underlay.yaml
+++ b/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/underlay.yaml
@@ -186,7 +186,7 @@
               volumes:
                 - name: system
                   capacity: !os_env NODE_VOLUME_SIZE, 150
-                  backing_store: cfg01_day01_image
+                  backing_store: cloudimage1604
                   format: qcow2
                 - name: iso  # Volume with name 'iso' will be used
                              # for store image with cloud-init metadata.
@@ -236,7 +236,7 @@
               volumes:
                 - name: system
                   capacity: !os_env NODE_VOLUME_SIZE, 150
-                  backing_store: cloudimage1604
+                  backing_store: cfg01_day01_image
                   format: qcow2
                 - name: iso  # Volume with name 'iso' will be used
                              # for store image with cloud-init metadata.