diff --git a/lib/hx509/crypto.c b/lib/hx509/crypto.c
index 4cf0184f6..4dd3d24d3 100644
--- a/lib/hx509/crypto.c
+++ b/lib/hx509/crypto.c
@@ -1484,6 +1484,7 @@ hx509_crypto_destroy(hx509_crypto crypto)
 	free(crypto->name);
     if (crypto->key.data)
 	free(crypto->key.data);
+    der_free_oid(&crypto->oid);
     memset(crypto, 0, sizeof(*crypto));
     free(crypto);
 }