diff --git a/src/gui/painting/qpaintengineex.cpp b/src/gui/painting/qpaintengineex.cpp
index 36414f4774..7f9f82d00a 100644
--- a/src/gui/painting/qpaintengineex.cpp
+++ b/src/gui/painting/qpaintengineex.cpp
@@ -870,7 +870,7 @@ void QPaintEngineEx::drawPoints(const QPointF *points, int pointCount)
         }
     } else {
         for (int i=0; i<pointCount; ++i) {
-            qreal pts[] = { points[i].x(), points[i].y(), points[i].x() + 1/63., points[i].y() };
+            qreal pts[] = { points[i].x(), points[i].y(), points[i].x() + qreal(1/63.), points[i].y() };
             QVectorPath path(pts, 2, 0);
             stroke(path, pen);
         }
diff --git a/src/gui/painting/qpainterpath.cpp b/src/gui/painting/qpainterpath.cpp
index eb67709318..e098e7c761 100644
--- a/src/gui/painting/qpainterpath.cpp
+++ b/src/gui/painting/qpainterpath.cpp
@@ -2399,7 +2399,7 @@ QDataStream &operator>>(QDataStream &s, QPainterPath &p)
 #endif
             continue;
         }
-        QPainterPath::Element elm = { x, y, QPainterPath::ElementType(type) };
+        QPainterPath::Element elm = { qreal(x), qreal(y), QPainterPath::ElementType(type) };
         p.d_func()->elements.append(elm);
     }
     s >> p.d_func()->cStart;
diff --git a/src/gui/painting/qpainterpath_p.h b/src/gui/painting/qpainterpath_p.h
index 23e8332f19..a9068f3855 100644
--- a/src/gui/painting/qpainterpath_p.h
+++ b/src/gui/painting/qpainterpath_p.h
@@ -268,7 +268,7 @@ inline void QPainterPathData::maybeMoveTo()
     }
 }
 
-#define KAPPA 0.5522847498
+#define KAPPA qreal(0.5522847498)
 
 
 QT_END_NAMESPACE