diff --git a/lib/hx509/hx_locl.h b/lib/hx509/hx_locl.h
index a188335cb..3f128b70b 100644
--- a/lib/hx509/hx_locl.h
+++ b/lib/hx509/hx_locl.h
@@ -144,5 +144,7 @@ extern hx509_lock _hx509_empty_lock;
 struct hx509_context_data {
     struct hx509_keyset_ops **ks_ops;
     int ks_num_ops;
+    int flags;
+#define HX509_CTX_CRL_MISSING_OK	1
 };