diff --git a/admin/unidata/Makefile b/admin/unidata/Makefile
index c8ccea8b91b..220477b46d5 100644
--- a/admin/unidata/Makefile
+++ b/admin/unidata/Makefile
@@ -47,3 +47,5 @@ clean:
 	  rm -f `sed -n 's/^;; FILE: //p' < charprop.el`; \
 	fi
 	rm -f charprop.el unidata-gen.elc unidata.txt
+
+# arch-tag: 3f576384-a8e7-4ec5-9d2e-9190c71683b4