diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index 2aba17b..1a314a8 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -5829,8 +5829,7 @@
 
     if (hs_buf->is_valid == 1) {
         hs->buffering.total_bytes_buffered -= hs_buf->data_len;
-        mbedtls_platform_zeroize(hs_buf->data, hs_buf->data_len);
-        mbedtls_free(hs_buf->data);
+        mbedtls_zeroize_and_free(hs_buf->data, hs_buf->data_len);
         memset(hs_buf, 0, sizeof(mbedtls_ssl_hs_buffer));
     }
 }