diff --git a/modules/util/viirs.py b/modules/util/viirs.py
index bc3fe21d944b08e37465ae99a5ce0e59a4072408..d4c5bbe3ad926c8243c1696f0037bf76db0d316a 100644
--- a/modules/util/viirs.py
+++ b/modules/util/viirs.py
@@ -101,11 +101,9 @@ def run_mean_std(directory):
     mean_dct = {name: 0 for name in mod_res_params}
     std_dct = {name: 0 for name in mod_res_params}
 
-    cnt = 0
     for p in os.scandir(directory):
         if not p.is_dir():
             continue
-        cnt += 1
         mod_files = glob.glob(directory+p.name+'/'+'VNP02MOD*.uwssec.nc')
 
         for idx, mfile in enumerate(mod_files):