diff --git a/modules/util/util.py b/modules/util/util.py
index 547e579791be0c757e20ce2ab1a48549837fbb5a..52c4c368e2b8210c15194e0a105b782c22f1b4bb 100644
--- a/modules/util/util.py
+++ b/modules/util/util.py
@@ -687,7 +687,7 @@ def compute_lwc_iwc(iphase, reff, opd):
     return lwp_dcomp, iwp_dcomp
 
 
-def make_for_full_domain_predict_viirs_clavrx(h5f, name_list=None, res_fac=1, day_night='DAY', lunar=False):
+def make_for_full_domain_predict_viirs_clavrx(h5f, name_list=None, res_fac=1, day_night='DAY', use_dnb=False):
     w_x = 16
     w_y = 16
     i_0 = 0
@@ -699,7 +699,7 @@ def make_for_full_domain_predict_viirs_clavrx(h5f, name_list=None, res_fac=1, da
     xlen = h5f['pixel_elements_along_scan_direction'].shape[0]
 
     use_nl_comp = False
-    if day_night == 'NIGHT' and lunar:
+    if day_night == 'NIGHT' and use_dnb:
         use_nl_comp = True
 
     grd_dct = {name: None for name in name_list}