diff --git a/src/plugins/chart_expressions/expression_xy/public/components/xy_chart.tsx b/src/plugins/chart_expressions/expression_xy/public/components/xy_chart.tsx
index 349af46eb101a..c6cb30d24c4c4 100644
--- a/src/plugins/chart_expressions/expression_xy/public/components/xy_chart.tsx
+++ b/src/plugins/chart_expressions/expression_xy/public/components/xy_chart.tsx
@@ -159,7 +159,7 @@ function nonNullable<T>(v: T): v is NonNullable<T> {
 function getValueLabelsStyling(isHorizontal: boolean): {
   displayValue: RecursivePartial<DisplayValueStyle>;
 } {
-  const VALUE_LABELS_MAX_FONTSIZE = 12;
+  const VALUE_LABELS_MAX_FONTSIZE = 10;
   const VALUE_LABELS_MIN_FONTSIZE = 10;
   const VALUE_LABELS_VERTICAL_OFFSET = -10;
   const VALUE_LABELS_HORIZONTAL_OFFSET = 10;