diff --git a/lib/hcrypto/rsa.c b/lib/hcrypto/rsa.c
index c71ded1b7..209df13d3 100644
--- a/lib/hcrypto/rsa.c
+++ b/lib/hcrypto/rsa.c
@@ -508,6 +508,7 @@ static const RSA_METHOD rsa_null_method = {
     0,
     NULL,
     NULL,
+    NULL,
     NULL
 };