diff --git a/selfdrive/ui/qt/onroad/annotated_camera.cc b/selfdrive/ui/qt/onroad/annotated_camera.cc
index 484075b3e2..c7ffa9b410 100644
--- a/selfdrive/ui/qt/onroad/annotated_camera.cc
+++ b/selfdrive/ui/qt/onroad/annotated_camera.cc
@@ -177,7 +177,7 @@ void AnnotatedCameraWidget::drawLaneLines(QPainter &painter, const UIState *s) {
 
     for (int i = 0; i < max_len; ++i) {
       // Some points are out of frame
-      int track_idx = (scene.track_vertices.length() / 2) - i;  // flip idx to start from top
+      int track_idx = max_len - i - 1;  // flip idx to start from bottom right
       if (scene.track_vertices[track_idx].y() < 0 || scene.track_vertices[track_idx].y() > height()) continue;
 
       // Flip so 0 is bottom of frame