diff --git a/Exec/science/xrb_spherical/analysis/slice.py b/Exec/science/xrb_spherical/analysis/slice.py
index 6c38d76822..42e5b12a14 100755
--- a/Exec/science/xrb_spherical/analysis/slice.py
+++ b/Exec/science/xrb_spherical/analysis/slice.py
@@ -67,8 +67,11 @@ def slice(fname:str, field:str, loc:str="top") -> None:
 
     if len(sys.argv) < 3:
         raise Exception("Please enter parameters in order of: fname field_name loc[optional]")
+
     fname = sys.argv[1]
     field = sys.argv[2]
+    loc = "top"
+
     if len(sys.argv) > 3:
         loc = sys.argv[3]