diff --git a/config/makeSkyMap.py b/config/makeSkyMap.py
index 62404576..75655cd7 100644
--- a/config/makeSkyMap.py
+++ b/config/makeSkyMap.py
@@ -25,3 +25,4 @@
 config.skyMap["rings"].projection = "TAN"
 config.skyMap["rings"].tractOverlap = 1.0 / 60  # Overlap between tracts (degrees)
 config.skyMap["rings"].pixelScale = 0.2
+config.skyMap["rings"].tractBuilder.name = "cells"