diff --git a/server/red-stream.c b/server/red-stream.c
index af722f2a..45e92a57 100644
--- a/server/red-stream.c
+++ b/server/red-stream.c
@@ -438,10 +438,12 @@ bool red_stream_is_ssl(RedStream *stream)
     return (stream->priv->ssl != NULL);
 }
 
+#if HAVE_SASL
 static void red_stream_disable_writev(RedStream *stream)
 {
     stream->priv->writev = NULL;
 }
+#endif
 
 RedStreamSslStatus red_stream_ssl_accept(RedStream *stream)
 {