diff --git a/CHANGES.md b/CHANGES.md
index 1f45817..557066c 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,10 @@
+2.12.0 (unreleased)
+-------------------
+
+* Mark `prompt_continue`, `prompt_comment`, `smart_accept`, `new_prompt_hooks`,
+  `at_new_prompt` as deprecated (they have been documented as such since 2012
+  and most of them are ignored) (#xxx @emillon)
+
 2.11.0 (2023-01-05)
 -------------------
 
diff --git a/src/lib/uTop.mli b/src/lib/uTop.mli
index ca68c13..3a86cbe 100644
--- a/src/lib/uTop.mli
+++ b/src/lib/uTop.mli
@@ -352,7 +352,16 @@ val set_load_path : string list -> unit
 (* These variables are not used and deprecated: *)
 
 val prompt_continue : LTerm_text.t React.signal ref
+[@@deprecated]
+
 val prompt_comment : LTerm_text.t React.signal ref
+[@@deprecated]
+
 val smart_accept : bool ref
+[@@deprecated]
+
 val new_prompt_hooks : (unit -> unit) LTerm_dlist.t
+[@@deprecated]
+
 val at_new_prompt : (unit -> unit) -> unit
+[@@deprecated]
diff --git a/src/lib/uTop_main.ml b/src/lib/uTop_main.ml
index be96f94..4352d3e 100644
--- a/src/lib/uTop_main.ml
+++ b/src/lib/uTop_main.ml
@@ -230,7 +230,7 @@ class read_phrase ~term = object(self)
         let input_utf8= Zed_string.to_utf8 input in
         (* Toploop does that: *)
         Location.reset ();
-        let eos_is_error = not !UTop.smart_accept in
+        let eos_is_error = not !(UTop.smart_accept[@alert "-deprecated"]) in
         try
           let result = parse_and_check input_utf8 eos_is_error in
           return_value <- Some result;