diff --git a/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp b/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp
index 19d427f88d2..10bfaf8d1fc 100644
--- a/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp
+++ b/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp
@@ -133,7 +133,6 @@ private:
     QMap<int, QPair<int, int> > m_chunkInfo;
     // block number, separator. Set for file, chunk or span line.
     QMap<int, bool> m_separators;
-    bool m_inPaintEvent = false;
     QColor m_fileLineForeground;
     QColor m_chunkLineForeground;
     QColor m_textForeground;
@@ -446,9 +445,7 @@ static QString skippedText(int skippedNumber)
 
 void SideDiffEditorWidget::paintEvent(QPaintEvent *e)
 {
-    m_inPaintEvent = true;
     SelectableTextEditorWidget::paintEvent(e);
-    m_inPaintEvent = false;
 
     QPainter painter(viewport());
     QPointF offset = contentOffset();