diff --git a/ocaml-autoconf.spec b/ocaml-autoconf.spec
index 40b0202..9a69ead 100644
--- a/ocaml-autoconf.spec
+++ b/ocaml-autoconf.spec
@@ -1,6 +1,6 @@
 Name:           ocaml-autoconf
 Version:        1.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Autoconf macros for OCaml
 
 Group:          Development/Libraries
@@ -16,6 +16,9 @@ BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildRequires:  /usr/bin/perldoc
 
+# Runtime requires /usr/share/aclocal subdirectory.
+Requires:       automake
+
 
 %description
 Autoconf macros for OCaml.
@@ -50,7 +53,7 @@ rm -rf $RPM_BUILD_ROOT
 
 
 %changelog
-* Tue Mar 31 2009 Richard W.M. Jones <rjones@redhat.com> - 1.0-3
+* Tue Mar 31 2009 Richard W.M. Jones <rjones@redhat.com> - 1.0-4
 - Upstream has released version 1.0 and it is properly licensed.
 
 * Thu Jan 22 2009 Richard W.M. Jones <rjones@redhat.com> - 0.1-0.1.git20090122