diff --git a/lib/hx509/hx_locl.h b/lib/hx509/hx_locl.h
index 547ac249f..0c185bab8 100644
--- a/lib/hx509/hx_locl.h
+++ b/lib/hx509/hx_locl.h
@@ -146,5 +146,7 @@ struct hx509_context_data {
     int ks_num_ops;
     int flags;
 #define HX509_CTX_VERIFY_MISSING_OK	1
+    int ocsp_time_diff;
+#define HX509_DEFAULT_OCSP_TIME_DIFF	(5*60)
 };