diff --git a/libs/image/kis_marker_painter.cpp b/libs/image/kis_marker_painter.cpp
index ff2f756..a38d234 100644
--- a/libs/image/kis_marker_painter.cpp
+++ b/libs/image/kis_marker_painter.cpp
@@ -60,9 +60,14 @@ void KisMarkerPainter::fillHalfBrushDiff(const QPointF &p1, const QPointF &p2, c
     KisAlgebra2D::RightHalfPlane plane2(p2, p3);
     KisAlgebra2D::OuterCircle outer(center, radius);
 
+    const QRectF originalRect = boundRect;
+
     boundRect = KisAlgebra2D::cutOffRect(boundRect, plane1);
     boundRect = KisAlgebra2D::cutOffRect(boundRect, plane2);
 
+    ENTER_FUNCTION() << boundRect.isEmpty() << ppVar(boundRect) << ppVar(originalRect);
+    ENTER_FUNCTION() << ppVar(p1) << ppVar(p2) << ppVar(p3);
+
     KisSequentialIterator it(m_d->device, boundRect.toAlignedRect());
     while (it.nextPixel()) {
         QPoint pt(it.x(), it.y());
@@ -126,6 +131,9 @@ void KisMarkerPainter::fillCirclesDiff(const QPointF &c1, qreal r1,
 {
     QVector<QPointF> n = KisAlgebra2D::intersectTwoCircles(c1, r1, c2, r2);
 
+    ENTER_FUNCTION() << c1 << r1 << c2 << r2 << n;
+
+
     if (n.size() < 2) {
         fillFullCircle(c2, r2);
     } else {