diff --git a/src/charts/row-chart.js b/src/charts/row-chart.js
index 7043be121..fc3d6dab1 100644
--- a/src/charts/row-chart.js
+++ b/src/charts/row-chart.js
@@ -46,7 +46,7 @@ export class RowChart extends CapMixin(ColorMixin(MarginMixin)) {
         this._gap = 5;
 
         this._fixedBarHeight = false;
-        this._rowCssClass = 'row';
+        this._rowCssClass = '_row';
         this._titleRowCssClass = 'titlerow';
         this._renderTitleLabel = false;