diff --git a/ocaml-ocp-indent.spec b/ocaml-ocp-indent.spec
index 332bdfb..15da799 100644
--- a/ocaml-ocp-indent.spec
+++ b/ocaml-ocp-indent.spec
@@ -61,7 +61,11 @@ dune build %{?_smp_mflags} --profile=release
 
 
 %install
-dune install --prefix=%{buildroot}%{_prefix} --libdir=%{buildroot}%{_libdir}/ocaml
+dune install \
+     --destdir=%{buildroot} \
+     --prefix=%{_prefix} \
+     --libdir=%{_libdir}/ocaml \
+     --mandir=%{_mandir}
 
 chmod 755 %{buildroot}%{_libdir}/ocaml/%{libname}/*/*.cmxs
 
@@ -72,8 +76,6 @@ rmdir %{buildroot}%{_datadir}/%{libname}/vim
 rmdir %{buildroot}%{_datadir}/%{libname}
 # Reinstall documents using %%doc later
 rm -fr %{buildroot}%{_prefix}/doc
-mkdir -p %{buildroot}%{_datadir}
-mv %{buildroot}%{_prefix}/man %{buildroot}%{_datadir}
 
 %check
 #Tests only run on a git checkout
@@ -108,6 +110,7 @@ mv %{buildroot}%{_prefix}/man %{buildroot}%{_datadir}
 %changelog
 * Sun Jan 19 2020 Richard W.M. Jones <rjones@redhat.com> - 1.7.0-6
 - OCaml 4.10.0+beta1 rebuild.
+- Use dune install --destdir option.
 
 * Fri Dec 06 2019 Richard W.M. Jones <rjones@redhat.com> - 1.7.0-5
 - OCaml 4.09.0 (final) rebuild.