diff --git a/src/proto_alpha/lib_protocol/src/script_tc_errors_registration.ml b/src/proto_alpha/lib_protocol/src/script_tc_errors_registration.ml
index 81ee38eeb..b00338de0 100644
--- a/src/proto_alpha/lib_protocol/src/script_tc_errors_registration.ml
+++ b/src/proto_alpha/lib_protocol/src/script_tc_errors_registration.ml
@@ -393,7 +393,7 @@ let () =
     (function Unexpected_annotation loc -> Some (loc, ())
             | _ -> None)
     (fun (loc, ()) -> Unexpected_annotation loc);
-  (* Unexpected annotation *)
+  (* Ungrouped annotations *)
   register_error_kind
     `Permanent
     ~id:"ungroupedAnnotations"