diff --git a/scripts/xyz_grid.py b/scripts/xyz_grid.py
index b2250c04d..e5083874a 100644
--- a/scripts/xyz_grid.py
+++ b/scripts/xyz_grid.py
@@ -476,6 +476,8 @@ class Script(scripts.Script):
         fill_z_button.click(fn=fill, inputs=[z_type, csv_mode], outputs=[z_values, z_values_dropdown])
 
         def select_axis(axis_type, axis_values, axis_values_dropdown, csv_mode):
+            axis_type = axis_type or 0  # if axle type is None set to 0
+
             choices = self.current_axis_options[axis_type].choices
             has_choices = choices is not None
 
@@ -526,6 +528,8 @@ class Script(scripts.Script):
         return [x_type, x_values, x_values_dropdown, y_type, y_values, y_values_dropdown, z_type, z_values, z_values_dropdown, draw_legend, include_lone_images, include_sub_grids, no_fixed_seeds, margin_size, csv_mode]
 
     def run(self, p, x_type, x_values, x_values_dropdown, y_type, y_values, y_values_dropdown, z_type, z_values, z_values_dropdown, draw_legend, include_lone_images, include_sub_grids, no_fixed_seeds, margin_size, csv_mode):
+        x_type, y_type, z_type = x_type or 0, y_type or 0, z_type or 0  # if axle type is None set to 0
+
         if not no_fixed_seeds:
             modules.processing.fix_seed(p)