diff --git a/ocaml-gen.spec b/ocaml-gen.spec
index c4b8672..f23dd7c 100644
--- a/ocaml-gen.spec
+++ b/ocaml-gen.spec
@@ -33,15 +33,15 @@ developing applications that use %{name}.
 
 
 %build
-jbuilder build @install
+jbuilder build --profile release @install
 
 
 %install
 mkdir -p %{buildroot}%{_libdir}/ocaml
-jbuilder install --destdir=%{buildroot} --libdir=%{buildroot}%{_libdir}/ocaml
+jbuilder install --destdir=%{buildroot} --libdir=%{_libdir}/ocaml
 
 # These files will be installed using doc and license directives.
-rm -r %{buildroot}/doc
+rm -r %{buildroot}/usr/doc
 
 # Makes *.cmxs executable such that they will be stripped.
 find %{buildroot} -name '*.cmxs' -exec chmod 0755 {} \;
@@ -77,7 +77,7 @@ jbuilder runtest --no-buffer
 
 %changelog
 * Thu Aug 01 2019 Richard W.M. Jones <rjones@redhat.com> - 0.5.1-9
-- Bump release and rebuild.
+- Miscellaneous build system updates.
 
 * Thu Aug 01 2019 Richard W.M. Jones <rjones@redhat.com> - 0.5.1-8
 - OCaml 4.08.1 (rc2) rebuild.