--- modules/ssl/ssl_engine_init.c.orig
+++ modules/ssl/ssl_engine_init.c
@@ -482,7 +482,9 @@ static void ssl_init_ctx_protocol(server
     }
 
     mctx->ssl_ctx = ctx;
-
+#ifdef SSL_MODE_RELEASE_BUFFERS
+    SSL_CTX_set_mode(ctx, SSL_MODE_RELEASE_BUFFERS);
+#endif
     SSL_CTX_set_options(ctx, SSL_OP_ALL);
 
     if (!(protocol & SSL_PROTOCOL_SSLV2)) {