diff --git a/pkg/operator/ceph/cluster/osd/update.go b/pkg/operator/ceph/cluster/osd/update.go
index 0790aed356040..165515eee68a7 100644
--- a/pkg/operator/ceph/cluster/osd/update.go
+++ b/pkg/operator/ceph/cluster/osd/update.go
@@ -126,7 +126,7 @@ func (c *updateConfig) updateExistingOSDs(errs *provisionErrors) {
 		}
 
 		// backward compatibility for old deployments
-		if osdInfo.DeviceClass == "" {
+		if osdInfo.DeviceClass == "" || osdInfo.DeviceClass == "None" {
 			deviceClassInfo, err := cephclient.OSDDeviceClasses(c.cluster.context, c.cluster.clusterInfo, []string{strconv.Itoa(osdID)})
 			if err != nil {
 				logger.Errorf("failed to get device class for existing deployment %q. %v", depName, err)