diff --git a/jsons/parameters.json b/jsons/parameters.json
index 7c5c42b..c8b66b5 100644
--- a/jsons/parameters.json
+++ b/jsons/parameters.json
@@ -333,7 +333,7 @@
             "star_style_1": [
                 [
                     "",
-                    ""
+                    "-"
                 ],
                 [
                     "gene_counts",