diff --git a/src/security/transform/private-key.cpp b/src/security/transform/private-key.cpp
index b7820c3..3ec0ff6 100644
--- a/src/security/transform/private-key.cpp
+++ b/src/security/transform/private-key.cpp
@@ -265,13 +265,7 @@
 {
   ENSURE_PRIVATE_KEY_LOADED(m_impl->key);
 
-  int keyType =
-#if OPENSSL_VERSION_NUMBER < 0x1010000fL
-    EVP_PKEY_type(m_impl->key->type);
-#else
-    EVP_PKEY_base_id(m_impl->key);
-#endif // OPENSSL_VERSION_NUMBER < 0x1010000fL
-
+  int keyType = detail::getEvpPkeyType(m_impl->key);
   switch (keyType) {
     case EVP_PKEY_NONE:
       BOOST_THROW_EXCEPTION(Error("Failed to determine key type"));