diff --git a/model/src/w3iorsmd.F90 b/model/src/w3iorsmd.F90
index 5253a66ab..6bf220ea5 100644
--- a/model/src/w3iorsmd.F90
+++ b/model/src/w3iorsmd.F90
@@ -8,7 +8,7 @@
 !/ ------------------------------------------------------------------- /
 !>
 !> @brief Read/write restart files.
-!>
+!> @todo resolve pdlib restart reproducibility.
 !> @author H. L. Tolman  @date 22-Mar-2021
 !>
 MODULE W3IORSMD