diff --git a/packages/grafana-ui/src/components/uPlot/PlotLegend.tsx b/packages/grafana-ui/src/components/uPlot/PlotLegend.tsx
index e952349056e..08cf4ec3c99 100644
--- a/packages/grafana-ui/src/components/uPlot/PlotLegend.tsx
+++ b/packages/grafana-ui/src/components/uPlot/PlotLegend.tsx
@@ -35,7 +35,7 @@ export const PlotLegend: React.FC<PlotLegendProps> = ({
 
       const field = data[fieldIndex.frameIndex]?.fields[fieldIndex.fieldIndex];
 
-      if (!field || field.config.custom.hideFrom?.legend) {
+      if (!field || field.config.custom?.hideFrom?.legend) {
         return undefined;
       }