diff --git a/ssl/ssl_privkey.cc b/ssl/ssl_privkey.cc
index d275561..a07f291 100644
--- a/ssl/ssl_privkey.cc
+++ b/ssl/ssl_privkey.cc
@@ -147,7 +147,7 @@
     return 0;
   }
 
-  if (ssl3_protocol_version(ssl) >= TLS1_3_VERSION) {
+  if (ssl_protocol_version(ssl) >= TLS1_3_VERSION) {
     // RSA keys may only be used with RSA-PSS.
     if (alg->pkey_type == EVP_PKEY_RSA && !alg->is_rsa_pss) {
       return 0;