diff --git a/src/gui/painting/qcosmeticstroker.cpp b/src/gui/painting/qcosmeticstroker.cpp
index f555b56adb7..a0eddf65d91 100644
--- a/src/gui/painting/qcosmeticstroker.cpp
+++ b/src/gui/painting/qcosmeticstroker.cpp
@@ -364,7 +364,7 @@ void QCosmeticStroker::drawPoints(const QPoint *points, int num)
     const QPoint *end = points + num;
     while (points < end) {
         QPointF p = QPointF(*points) * state->matrix;
-        drawPixel(this, qRound(p.x()), qRound(p.y()), 255);
+        drawPixel(this, std::floor(p.x()), std::floor(p.y()), 255);
         ++points;
     }
 
@@ -377,7 +377,7 @@ void QCosmeticStroker::drawPoints(const QPointF *points, int num)
     const QPointF *end = points + num;
     while (points < end) {
         QPointF p = (*points) * state->matrix;
-        drawPixel(this, qRound(p.x()), qRound(p.y()), 255);
+        drawPixel(this, std::floor(p.x()), std::floor(p.y()), 255);
         ++points;
     }
 
diff --git a/tests/baseline/painting/scripts/aliasing.qps b/tests/baseline/painting/scripts/aliasing.qps
index 59878f9c4d3..1fb0113396e 100644
--- a/tests/baseline/painting/scripts/aliasing.qps
+++ b/tests/baseline/painting/scripts/aliasing.qps
@@ -19,6 +19,17 @@ begin_block drawing
     setPen black
     drawText 0 68 "QwErTy@"
 
+    setPen green 1 SolidLine
+    drawLine 0 75 10 75
+    setPen 800000ff 1
+    drawPoint 0 75
+    drawPoint 10 75
+
+    setPen green 2 SolidLine
+    drawLine 20 75 30 75
+    setPen 800000ff 2
+    drawPoint 20 75
+    drawPoint 30 75
 
     setPen black 1
     setBrush 7f7fff
@@ -153,4 +164,4 @@ drawText 15 185 "1.0"
 
 resetMatrix
 drawText 430 95 "Aliased"
-drawText 430 275 "Anti-Aliased"
\ No newline at end of file
+drawText 430 275 "Anti-Aliased"