diff --git a/config/fgcmMakeLut.py b/config/fgcmMakeLut.py
index 9f37971f..02a672c4 100644
--- a/config/fgcmMakeLut.py
+++ b/config/fgcmMakeLut.py
@@ -25,3 +25,6 @@
 
 # FGCM name or filename of precomputed atmospheres
 config.atmosphereTableName = "fgcm_atm_subaru3"
+
+# Create a LUT for all detectors (for backwards compatibility).
+config.useScienceDetectors = False