diff --git a/src/bin/rdcore/rootmap.rs b/src/bin/rdcore/rootmap.rs
index 83e9e675d..b613bab91 100644
--- a/src/bin/rdcore/rootmap.rs
+++ b/src/bin/rdcore/rootmap.rs
@@ -219,7 +219,7 @@ fn get_luks_uuid(device: &Path) -> Result<String> {
     match deps.as_slice() {
         [] => bail!("missing parent device for {}", device.display()),
         [device] => {
-            if Disk::new(device)?.is_dm_device() {
+            if Disk::new(device)?.is_luks_integrity()? {
                 return get_luks_uuid(device);
             }
             Ok(runcmd_output!("cryptsetup", "luksUUID", device)?