diff --git a/build/patch_all_entities b/build/patch_all_entities
new file mode 100755
index 00000000..b9042c2e
--- /dev/null
+++ b/build/patch_all_entities
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+find ../entities -name uk\*.xml \
+	-exec perl -i patch_entity.pl \{\} \;
diff --git a/build/patch_entity.pl b/build/patch_entity.pl
new file mode 100644
index 00000000..77b15d1c
--- /dev/null
+++ b/build/patch_entity.pl
@@ -0,0 +1,13 @@
+#!/usr/bin/perl
+
+$seen = 0;
+
+while (<>) {
+	if (/^\s+http:\/\/ukfederation.org.uk\/2006\/11\/label/) {
+		$seen = 1; # don't apply the change twice to the same file
+	}
+	if (!$seen && /^(\s+)http:\/\/www.w3.org\/2001\/04\/xmlenc/) {
+		print "$1http://ukfederation.org.uk/2006/11/label uk-fed-label.xsd\n";
+	}
+	print $_;
+}
\ No newline at end of file