diff --git a/patch.spec b/patch.spec
index df7df83..31d530e 100644
--- a/patch.spec
+++ b/patch.spec
@@ -17,6 +17,8 @@ Patch8: patch-allow-spaces.patch
 Patch9: patch-selinux.patch
 Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
+BuildRequires: libselinux-devel
+
 %description
 The patch program applies diff files to originals.  The diff command
 is used to compare an original to a changed file.  Diff lists the
@@ -65,7 +67,7 @@ rm -rf $RPM_BUILD_ROOT
 
 %changelog
 * Thu Jun 12 2008 Tim Waugh <twaugh@redhat.com> 2.5.4-33
-- Fix selinux patch and apply it.
+- Fix selinux patch and apply it.  Build requires libselinux-devel.
 
 * Fri Feb  8 2008 Tim Waugh <twaugh@redhat.com> 2.5.4-32
 - Applied patch from 2.5.9 to allow spaces in filenames (bug #431887).