diff --git a/libguestfs.spec b/libguestfs.spec
index cad825e..0330a8b 100644
--- a/libguestfs.spec
+++ b/libguestfs.spec
@@ -124,6 +124,7 @@ Name:           libguestfs
 %if "%{?_ignore_exclusive_arch}" == ""
 ExclusiveArch:  x86_64 ppc64 ppc64le s390x aarch64
 %endif
+%{ocaml_preserve_bytecode}
 BuildRequires:  aaa_base
 BuildRequires:  attr-devel
 BuildRequires:  augeas-devel >= 1.0.0
@@ -171,6 +172,7 @@ BuildRequires:  ocaml
 BuildRequires:  ocaml-findlib
 
 #
+BuildRequires:  ocaml-rpm-macros >= 4.02.1
 %if %{with ocaml_bindings}
 %define _configure_ocaml --enable-ocaml
 %endif