diff --git a/flow/enginesrc/org/labkey/flow/analysis/chart/PlotFactory.java b/flow/enginesrc/org/labkey/flow/analysis/chart/PlotFactory.java
index 6169a20530..0d67e414c4 100644
--- a/flow/enginesrc/org/labkey/flow/analysis/chart/PlotFactory.java
+++ b/flow/enginesrc/org/labkey/flow/analysis/chart/PlotFactory.java
@@ -280,7 +280,7 @@ static public HistPlot createHistogramPlot(Subset subset, String axis)
         ValueAxis xAxis = getValueAxis(getLabel(subset, axis), fn);
 
         ValueAxis yAxis = new NumberAxis("Count");
-        double yMax = 0;
+        double yMax = 10;
         for (int i = 1; i < dataset.getItemCount(0) - 1; i ++)
         {
             yMax = Math.max(dataset.getY(0, i), yMax);