diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index d352be07..94f9f330 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -3360,6 +3360,7 @@ Stan:
   extensions:
   - .stan
   ace_mode: text
+  tm_scope: none
 
 Standard ML:
   type: programming