diff --git a/src/proto_alpha/lib_protocol/apply.ml b/src/proto_alpha/lib_protocol/apply.ml
index 99bd8cd1bcf399725dc8e605b5767f7c5f0df7e9..f3ff86ed51f918ac895dd8dce57c166cba40d2fd 100644
--- a/src/proto_alpha/lib_protocol/apply.ml
+++ b/src/proto_alpha/lib_protocol/apply.ml
@@ -1955,12 +1955,12 @@ let precheck_manager_contents (type kind) ctxt (op : kind Kind.manager contents)
         ~count_limit:tx_rollup_max_messages_per_inbox
       >>?= fun () ->
       Tx_rollup_errors.check_path_depth
-        `Inbox
+        `Commitment
         (Tx_rollup_commitment.Merkle.path_depth message_result_path)
         ~count_limit:tx_rollup_max_messages_per_inbox
       >>?= fun () ->
       Tx_rollup_errors.check_path_depth
-        `Inbox
+        `Commitment
         (Tx_rollup_commitment.Merkle.path_depth previous_message_result_path)
         ~count_limit:tx_rollup_max_messages_per_inbox
       >>?= fun () -> return ctxt
diff --git a/src/proto_alpha/lib_protocol/tx_rollup_errors_repr.ml b/src/proto_alpha/lib_protocol/tx_rollup_errors_repr.ml
index 3b6d1b0aa0a80e9927d93914b5591b1686b60ad2..274c7924180d9a88c868f1b3b832291d42c9e328 100644
--- a/src/proto_alpha/lib_protocol/tx_rollup_errors_repr.ml
+++ b/src/proto_alpha/lib_protocol/tx_rollup_errors_repr.ml
@@ -394,7 +394,7 @@ let () =
        depth that can be witnessed."
     (obj3
        (req
-          "kind"
+          "target"
           (union
              [
                case