diff --git a/include/Makefile.am b/include/Makefile.am
index 10175a2..eab3306 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -16,3 +16,4 @@ noinst_HEADERS += stdlib.h
 noinst_HEADERS += Makefile.in
 noinst_HEADERS += poll.h
 noinst_HEADERS += time.h
+noinst_HEADERS += tls.h