diff --git a/config.json b/config.json
index 03b2875179..43da48bf1a 100644
--- a/config.json
+++ b/config.json
@@ -13,7 +13,6 @@
   "online_editor": {
     "indent_style": "space",
     "indent_size": 2,
-    "ace_editor_language": "elixir",
     "highlightjs_language": "elixir"
   },
   "test_runner": {