diff --git a/internal/cephfs/nodeserver.go b/internal/cephfs/nodeserver.go
index cfeefa0bd..9b46e846c 100644
--- a/internal/cephfs/nodeserver.go
+++ b/internal/cephfs/nodeserver.go
@@ -151,7 +151,7 @@ func maybeUnlockFileEncryption(
 	}
 	defer ioctx.Destroy()
 
-	res, err := ioctx.LockExclusive(volOptions.VolID, lockName, lockCookie, lockDesc, lockDuration, &flags)
+	res, err := ioctx.LockExclusive(string(volID), lockName, lockCookie, lockDesc, lockDuration, &flags)
 	if res != 0 {
 		switch res {
 		case -int(syscall.EBUSY):