diff --git a/frontend/static/languages/code_ocaml.json b/frontend/static/languages/code_ocaml.json
index 361fbba8d..4b049d26e 100644
--- a/frontend/static/languages/code_ocaml.json
+++ b/frontend/static/languages/code_ocaml.json
@@ -323,6 +323,7 @@
     "?exn:exn ->",
     "List.map",
     "List.filter",
+    "List.fold",
     "List.fold_left",
     "List.fold_right",
     "List.iter",
@@ -443,7 +444,6 @@
     "nan",
     "infinity",
     "neg_infinity",
-    "not",
     "pred",
     "succ",
     "sqrt",