diff --git a/include/cryb/Makefile.am b/include/cryb/Makefile.am
index ad29639..c4dfd03 100644
--- a/include/cryb/Makefile.am
+++ b/include/cryb/Makefile.am
@@ -20,6 +20,7 @@ cryb_HEADERS = \
 	md2.h \
 	md4.h \
 	md5.h \
+	memset_s.h \
 	mpi.h \
 	oath.h \
 	oath_constants.h \