diff --git a/src/qchart.cpp b/src/qchart.cpp
index 670dd2d..2913436 100644
--- a/src/qchart.cpp
+++ b/src/qchart.cpp
@@ -230,7 +230,9 @@ QBrush QChart::titleBrush() const
 }
 
 /*!
- Sets the \a theme used by the chart for rendering the graphical representation of the data
+ Sets the \a theme used by the chart for rendering the graphical representation of the data.
+
+ Note: changing the theme will overwrite all customizations (pen, brush, font, ect.) done to the series.
  \sa theme()
  */
 void QChart::setTheme(QChart::ChartTheme theme)
diff --git a/tests/auto/qlineseries/tst_qlineseries.cpp b/tests/auto/qlineseries/tst_qlineseries.cpp
index 2d5c0d1..ef08e82 100644
--- a/tests/auto/qlineseries/tst_qlineseries.cpp
+++ b/tests/auto/qlineseries/tst_qlineseries.cpp
@@ -284,7 +284,7 @@ void tst_QLineSeries::pen()
 
     m_chart->setTheme(QChart::ChartThemeDark);
 
-    if(pen!=QPen()) QCOMPARE(series.pen(), pen);
+    QVERIFY(series.pen() != pen);
 }
 
 void tst_QLineSeries::pointsVisible_data()