diff --git a/xybrid/ui/patchboard/patchboardscene.cpp b/xybrid/ui/patchboard/patchboardscene.cpp
index 8498d1c..1effa51 100644
--- a/xybrid/ui/patchboard/patchboardscene.cpp
+++ b/xybrid/ui/patchboard/patchboardscene.cpp
@@ -132,9 +132,9 @@ void PatchboardScene::drawBackground(QPainter* painter, const QRectF& rect) {
 
     const constexpr int step = 32; // grid size
     painter->setPen(QPen(QColor(127, 127, 127, 63), 1));
-    for (auto y = std::floor(rect.top() / step) * step + .5; y < rect.bottom(); y += step)
+    for (auto y = std::floor(rect.top() / step) * step + .5; y < rect.bottom(); y += step) // NOLINT
         painter->drawLine(QPointF(rect.left(), y), QPointF(rect.right(), y));
-    for (auto x = std::floor(rect.left() / step) * step + .5; x < rect.right(); x += step)
+    for (auto x = std::floor(rect.left() / step) * step + .5; x < rect.right(); x += step) // NOLINT
         painter->drawLine(QPointF(x, rect.top()), QPointF(x, rect.bottom()));
 }