diff --git a/uppsrc/ScatterCtrl/Processing.cpp b/uppsrc/ScatterCtrl/Processing.cpp
index 811310c01..923f427a7 100644
--- a/uppsrc/ScatterCtrl/Processing.cpp
+++ b/uppsrc/ScatterCtrl/Processing.cpp
@@ -191,8 +191,11 @@ ProcessingTab::ProcessingTab()
 	tabHistRight.numVals <<= 30;
 	tabHistRight.valNormalize <<= 100;
 	
-	//tabHistRight.opNormalize.WhenAction   = [&] {tabHistRight.valNormalize.Enable(~tabHistRight.opNormalize);};
-	//tabHistRight.opNormalize.WhenAction();
+	tabHistRight.opNormalize.WhenAction   = [&] {
+		tabHistRight.valNormalize.Enable(~tabHistRight.opNormalize);
+		tabHistRight.labNormalize.Enable(~tabHistRight.opNormalize);
+	};
+	tabHistRight.opNormalize.WhenAction();
 	
 	tabFreqFirst = tabOpFirst = tabBestFitFirst = tabHistFirst = true;
 	avgFirst = linearFirst = cuadraticFirst = cubicFirst = sinusFirst = sinusTendFirst = splineFirst = true;
@@ -795,7 +798,9 @@ void ProcessingTab::OnHist() {
 		histogram.Normalize(valNormalize);
 	
 	String legend = tabFitLeft.scatter.GetLegend(0) + String("-") + t_("Histogram");
-	tabHistLeft.scatter.AddSeries(histogram).Legend(legend).Units("#", isY ? tabFitLeft.scatter.GetUnitsY(0) : tabFitLeft.scatter.GetUnitsX(0));
+	tabHistLeft.scatter.AddSeries(histogram).Legend(legend).Units(normalize ? "%" : "#", isY ? tabFitLeft.scatter.GetUnitsY(0) : tabFitLeft.scatter.GetUnitsX(0));
+	if (~tabHistRight.opStaggered)
+		tabHistLeft.scatter.PlotStyle<StaggeredSeriesPlot>().Dash("").NoMark().Fill(Blue()).Opacity(0.3).Stroke(2, LtBlue());
 	tabHistLeft.scatter.ShowInfo().ShowContextMenu().ShowProcessDlg().ShowPropertiesDlg().SetMouseHandlingLinked(true, true);
 	tabHistLeft.scatter.SetLabelX(isY ? tabFitLeft.scatter.GetLegend(0) : tabFitLeft.scatter.GetLabelX());
 	tabHistLeft.scatter.SetLabelY(t_("Number"));
diff --git a/uppsrc/ScatterCtrl/ScatterCtrl.lay b/uppsrc/ScatterCtrl/ScatterCtrl.lay
index 02406395f..941f056ac 100644
--- a/uppsrc/ScatterCtrl/ScatterCtrl.lay
+++ b/uppsrc/ScatterCtrl/ScatterCtrl.lay
@@ -301,11 +301,13 @@ LAYOUT(ProcessingTabHistogramRight, 124, 424)
 	ITEM(EditInt, numVals, Min(1).HSizePosZ(56, 4).TopPosZ(48, 19))
 	ITEM(Label, dv___6, SetLabel(t_("Axis")).HSizePosZ(4, 4).TopPosZ(4, 19))
 	ITEM(DropList, axis, HSizePosZ(4, 4).TopPosZ(24, 19))
-	ITEM(Button, butHist, SetLabel(t_("Histogram")).HSizePosZ(4, 4).TopPosZ(200, 20))
-	ITEM(Label, dv___9, SetLabel(t_("Val:")).LeftPosZ(12, 36).TopPosZ(164, 19))
+	ITEM(Button, butHist, SetLabel(t_("Histogram")).HSizePosZ(4, 4).TopPosZ(224, 20))
+	ITEM(Label, labNormalize, SetLabel(t_("Val:")).LeftPosZ(12, 36).TopPosZ(164, 19))
 	ITEM(EditDouble, valNormalize, Min(0).HSizePosZ(56, 12).TopPosZ(164, 19))
-	ITEM(OptionBox, opNormalize, AutoBox(true).SetLabel(t_("Normalize")).HSizePosZ(4, 4).TopPosZ(144, 48))
+	ITEM(LabelBox, dv___11, SetLabel(t_("                         ")).HSizePosZ(4, 4).TopPosZ(144, 48))
+	ITEM(Option, opStaggered, SetLabel(t_("Staggered")).LeftPosZ(4, 88).TopPosZ(200, 16))
 	ITEM(Option, opAccumulative, SetLabel(t_("Accumulative")).LeftPosZ(4, 88).TopPosZ(120, 16))
+	ITEM(Option, opNormalize, SetLabel(t_("Normalize")).LeftPosZ(12, 72).TopPosZ(144, 16))
 END_LAYOUT
 
 LAYOUT(FontSelector, 208, 76)