diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index d69b072a..b4f76ed5 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -2621,8 +2621,8 @@ STON:
   group: Smalltalk
   extensions:
   - .ston
-  tm_scope: source.json
-  ace_mode: lisp
+  tm_scope: source.smalltalk
+  ace_mode: text
 
 Sage:
   type: programming