diff --git a/modules/util/viirs_l1b_l2.py b/modules/util/viirs_l1b_l2.py
index c529e46540cecc23a3a9dff905ee278fae1d1820..873efffd1203c32e3262ae978e25ea9dc3a8adb5 100644
--- a/modules/util/viirs_l1b_l2.py
+++ b/modules/util/viirs_l1b_l2.py
@@ -35,7 +35,7 @@ def run_all(directory, out_directory):
             continue
         print(p.name)
 
-        data_files = glob.glob(directory + p.name+'/'+'clavrx_snpp_viirs*.uwssec*.h5')
+        data_files = glob.glob(directory + p.name+'/'+'clavrx_snpp_viirs*.uwssec*.nc')
         # data_files = glob.glob(directory + p.name + '/' + 'VNP02MOD*.uwssec.nc')
 
         label_valid_tiles = []