diff --git a/modules/util/util.py b/modules/util/util.py
index e474ad8d440c424aee2fc004859eabd4e4fe2c38..f3bb1a22fa95bc9fd74f79fd5eae63caaaa72c20 100644
--- a/modules/util/util.py
+++ b/modules/util/util.py
@@ -517,6 +517,8 @@ def make_for_full_domain_predict(h5f, name_list=None, satellite='GOES16', domain
     w_y = 16
     i_0 = 0
     j_0 = 0
+    s_x = w_x
+    s_y = w_y
 
     geos, xlen, xmin, xmax, ylen, ymin, ymax = get_cartopy_crs(satellite, domain)
     if satellite == 'H08':
@@ -539,17 +541,17 @@ def make_for_full_domain_predict(h5f, name_list=None, satellite='GOES16', domain
 
     grd_dct_n = {name: [] for name in name_list}
 
-    n_x = int(xlen/w_x)
-    n_y = int(ylen/w_y)
+    n_x = int(xlen/s_x)
+    n_y = int(ylen/s_y)
 
-    ll = [j_0 + j*w_y for j in range(n_y-1)]
-    cc = [i_0 + i*w_x for i in range(n_x-1)]
+    ll = [j_0 + j*s_y for j in range(n_y-1)]
+    cc = [i_0 + i*s_x for i in range(n_x-1)]
 
     for ds_name in name_list:
         for j in range(n_y-1):
-            j_ul = j * w_y
+            j_ul = j * s_y
             for i in range(n_x-1):
-                i_ul = i * w_x
+                i_ul = i * s_x
                 grd_dct_n[ds_name].append(grd_dct[ds_name][j_ul:j_ul+w_y, i_ul:i_ul+w_x])
 
     grd_dct = {name: None for name in name_list}