diff --git a/activitysim/core/flow.py b/activitysim/core/flow.py
index 39f706a6c..0b1e9fce1 100644
--- a/activitysim/core/flow.py
+++ b/activitysim/core/flow.py
@@ -374,6 +374,7 @@ def skims_mapping(
             od_skims=skim_dataset,
             dp_skims=skim_dataset,
             op_skims=skim_dataset,
+            nd_skims=skim_dataset,
             odt_skims=skim_dataset,
             dot_skims=skim_dataset,
             dpt_skims=skim_dataset,
@@ -389,6 +390,8 @@ def skims_mapping(
                 f"df._stop_col_name -> dp_skims.{ddim}",
                 f"df._orig_col_name -> op_skims.{odim}",
                 f"df._stop_col_name -> op_skims.{ddim}",
+                f"df._primary_origin_col_name -> nd_skims.{odim}",
+                f"df._dest_col_name -> nd_skims.{ddim}",
                 f"df._orig_col_name -> odt_skims.{odim}",
                 f"df._dest_col_name -> odt_skims.{ddim}",
                 "df.trip_period     -> odt_skims.time_period",