diff --git a/configure.ac b/configure.ac
index c5683ec..bdd1dd2 100755
--- a/configure.ac
+++ b/configure.ac
@@ -831,6 +831,7 @@
   lib/rs/test/Makefile
   lib/lua/Makefile
   lib/swift/Makefile
+  lib/ts/Makefile
   lib/xml/Makefile
   lib/xml/test/Makefile
   test/Makefile