diff --git a/lib/microwaveprop/weather/grib2/wgrib2.ex b/lib/microwaveprop/weather/grib2/wgrib2.ex
index 78deca9f..8fe3a00a 100644
--- a/lib/microwaveprop/weather/grib2/wgrib2.ex
+++ b/lib/microwaveprop/weather/grib2/wgrib2.ex
@@ -372,7 +372,7 @@ defmodule Microwaveprop.Weather.Grib2.Wgrib2 do
         ["-lon", "#{normalize_lon(lon)}", "#{lat}"]
       end)
 
-    args = [grib_path, "-match", match_pattern] ++ lon_args
+    args = [grib_path, "-s", "-match", match_pattern] ++ lon_args
 
     case System.cmd(wgrib2_path(), args, stderr_to_stdout: true) do
       {output, 0} ->