diff --git a/lib/asn1/.cvsignore b/lib/asn1/.cvsignore
index 70845e08e..b2f290667 100644
--- a/lib/asn1/.cvsignore
+++ b/lib/asn1/.cvsignore
@@ -1 +1,2 @@
 Makefile.in
+der-protos.h