diff --git a/rtiow/src/renderer.rs b/rtiow/src/renderer.rs
index dad31a8..9452d02 100644
--- a/rtiow/src/renderer.rs
+++ b/rtiow/src/renderer.rs
@@ -496,7 +496,7 @@ fn render_worker(
             Ok(req) => match req {
                 Request::Line { width, y } => {
                     trace!("tid {} width {} y {}", tid, width, y);
-                    let batch = true;
+                    let batch = false;
                     if batch {
                         let (pixels, rays): (Vec<Vec3>, Vec<usize>) = (0..width)
                             .map(|x| render_pixel(scene, x, y))