diff --git a/ocaml-libvirt.spec b/ocaml-libvirt.spec
index 2ec26b5..4328dbf 100644
--- a/ocaml-libvirt.spec
+++ b/ocaml-libvirt.spec
@@ -1,3 +1,6 @@
+# OCaml packages not built on i686 since OCaml 5 / Fedora 39.
+ExcludeArch: %{ix86}
+
 Name:           ocaml-libvirt
 Version:        0.6.1.7
 Release:        2%{?dist}