diff --git a/galsim/roman/__init__.py b/galsim/roman/__init__.py
index 7b27c13939..e22880403a 100644
--- a/galsim/roman/__init__.py
+++ b/galsim/roman/__init__.py
@@ -68,8 +68,10 @@
 # Which bands should use the long vs short pupil plane files for the PSF.
 # F184, K213
 longwave_bands = ['F184', 'K213']
-# R062, Z087, Y106, J129, H158, W146
-shortwave_bands = ['R062', 'Z087', 'Y106', 'J129', 'H158', 'W146','SNPrism']
+# R062, Z087, Y106, J129, H158, W146, SNPrism, Grism_0thOrder, Grism_1stOrder.
+# Note that the last three are not imaging bands.
+shortwave_bands = ['R062', 'Z087', 'Y106', 'J129', 'H158', 'W146',
+                   'SNPrism', 'Grism_0thOrder', 'Grism_1stOrder']
 
 stray_light_fraction = 0.1