diff --git a/modules/icing/pirep_goes.py b/modules/icing/pirep_goes.py
index ea95b66441a1c6e1a3879d06734c1de9b539c889..827c2ada178fa93d2584f755f1ccc8599ae3da68 100644
--- a/modules/icing/pirep_goes.py
+++ b/modules/icing/pirep_goes.py
@@ -1429,7 +1429,7 @@ def run_mean_std(check_cloudy=False, no_icing_to_icing_ratio=5):
         data_ni -= mean_ni
         std_ni = np.nanstd(data_ni)
         lo_ni = np.nanmin(data_ni)
-        hi_ni = np.nammax(data_ni)
+        hi_ni = np.nanmax(data_ni)
         cnt_ni = np.sum(np.invert(np.isnan(data_ni)))
 
         no_icing_to_icing_ratio = cnt_ni/cnt_i