diff --git a/postreise/analyze/mwmiles.py b/postreise/analyze/mwmiles.py
index 9d789434..5fb79248 100644
--- a/postreise/analyze/mwmiles.py
+++ b/postreise/analyze/mwmiles.py
@@ -41,7 +41,7 @@ def calculate_mw_miles(scenario):
     """
 
     original_grid = Grid(scenario.info['interconnect'].split('_'))
-    ct = scenario.change_table.ct
+    ct = scenario.state.get_ct()
     upgrades = _calculate_mw_miles(original_grid, ct)
     return upgrades