diff --git a/ocaml-fileutils.spec b/ocaml-fileutils.spec
index 7325504..08ed870 100644
--- a/ocaml-fileutils.spec
+++ b/ocaml-fileutils.spec
@@ -28,6 +28,7 @@ Source0:        ocaml-fileutils-%{version}.tar.xz
 BuildRequires:  ocaml >= 4.00.1
 BuildRequires:  ocaml-rpm-macros >= 4.02.1
 BuildRequires:  ocamlfind(str)
+BuildRequires:  ocamlfind(oUnit)
 BuildRequires:  ocamlfind(unix)
 BuildRequires:  ocaml-oasis
 BuildRequires:  ocaml-ocamldoc
@@ -65,6 +66,7 @@ developing applications that use %{name}.
 %build
 oasis setup
 ocaml setup.ml -configure \
+      --enable-tests \
       --bindir '%{_bindir}' \
       --mandir '%{_mandir}' \
       --destdir '%{buildroot}' \