diff --git a/cscripts/modutils.py b/cscripts/modutils.py
index b0a92ed..8d1e501 100755
--- a/cscripts/modutils.py
+++ b/cscripts/modutils.py
@@ -370,6 +370,7 @@ def models2ds9file(models, filename,
                                         pnt_type=pnt_type,
                                         pnt_mark_size=pnt_mark_size,
                                         show_labels=show_labels,
+                                        show_ext_type=show_ext_type,
                                         free_color=free_color,
                                         fixed_color=fixed_color,
                                         width=width,