diff --git a/flake.lock b/flake.lock
index 866c7728..0700d9da 100644
--- a/flake.lock
+++ b/flake.lock
@@ -26,11 +26,11 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1770303219,
-        "narHash": "sha256-pUsxUS5TyhYAiVu1VFwKDtPFVNZy9+izjz8LWM8DvBs=",
+        "lastModified": 1770745295,
+        "narHash": "sha256-OsHuLEcZnhWIJu4S6lbQlZ4iygwFx7mkFtPUC9E6tME=",
         "owner": "aeneasverif",
         "repo": "charon",
-        "rev": "b684df3a5ec342695a45a9b62a4079235b5e478e",
+        "rev": "2419dcb26b8d44895bf8c18e7eed2ede9249f6e6",
         "type": "github"
       },
       "original": {
diff --git a/lib/AstOfLlbc.ml b/lib/AstOfLlbc.ml
index 57e0276e..dbaa6dc1 100644
--- a/lib/AstOfLlbc.ml
+++ b/lib/AstOfLlbc.ml
@@ -2193,7 +2193,7 @@ and expression_of_statement_kind (env : env) (ret_var : C.local_id) (s : C.state
         (*       [ p ]))) *)
         | _ -> Krml.Helpers.eunit
       end
-  | Assert a -> expression_of_assertion env a
+  | Assert (a, _on_failure) -> expression_of_assertion env a
   | Call
       {
         func =