diff --git a/lib/hx509/Makefile.am b/lib/hx509/Makefile.am
index 62c96863e..c947e0652 100644
--- a/lib/hx509/Makefile.am
+++ b/lib/hx509/Makefile.am
@@ -314,6 +314,7 @@ EXTRA_DIST = \
 	tst-crypto-select5 \
 	tst-crypto-select6 \
 	tst-crypto-select7 \
+	data/n0ll.pem \
 	data/secp160r1TestCA.cert.pem \
 	data/secp160r1TestCA.key.pem \
 	data/secp160r1TestCA.pem \