diff --git a/src/PowerHist.h b/src/PowerHist.h
index 2c5ae7ed3..cf1e8aa36 100644
--- a/src/PowerHist.h
+++ b/src/PowerHist.h
@@ -64,7 +64,7 @@ class penTooltip: public QwtPlotZoomer
          }
 
         virtual QwtText trackerText(const QPoint &/*pos*/) const {
-            QColor bg = QColor(255,255, 170); // toolyip yellow
+            QColor bg = QColor(Qt::lightGray);
 #if QT_VERSION >= 0x040300
             bg.setAlpha(200);
 #endif