diff --git a/reV/supply_curve/sc_aggregation.py b/reV/supply_curve/sc_aggregation.py
index b0d728fd9..edfbfdc78 100644
--- a/reV/supply_curve/sc_aggregation.py
+++ b/reV/supply_curve/sc_aggregation.py
@@ -384,6 +384,7 @@ def __init__(self, excl_fpath, tm_dset, econ_fpath=None,
 
                 excl_fpath = "..."
                 resolution = ...
+                tm_dset = "..."
                 with SupplyCurveExtent(excl_fpath, resolution) as sc:
                     gids = sc.valid_sc_points(tm_dset).tolist()
                 ...