diff --git a/libraries/chain/include/eosio/chain/rsa.hpp b/libraries/chain/include/eosio/chain/rsa.hpp
index 33725a55cc9..aa66643f57c 100644
--- a/libraries/chain/include/eosio/chain/rsa.hpp
+++ b/libraries/chain/include/eosio/chain/rsa.hpp
@@ -43,7 +43,7 @@ namespace fc {
 
         ~rsa_public_key() {
             if (rsa) {
-                delete rsa;
+                RSA_free(rsa);
             }
         }