diff --git a/brltty.spec b/brltty.spec
index f967643..fd8e294 100644
--- a/brltty.spec
+++ b/brltty.spec
@@ -244,6 +244,8 @@ Requires: brlapi%{?_isa} = %{api_version}-%{release}
 BuildRequires: ocaml
 BuildRequires: ocaml-findlib
 BuildRequires: make
+# OCaml packages not built on i686 since OCaml 5 / Fedora 39.
+ExcludeArch: %{ix86}
 Summary: OCaml binding for BrlAPI
 %description -n ocaml-brlapi
 This package provides the OCaml binding for BrlAPI.