diff --git a/superset-frontend/plugins/legacy-preset-chart-nvd3/src/transformProps.js b/superset-frontend/plugins/legacy-preset-chart-nvd3/src/transformProps.js
index cf54d4c9f7..4287cd64c4 100644
--- a/superset-frontend/plugins/legacy-preset-chart-nvd3/src/transformProps.js
+++ b/superset-frontend/plugins/legacy-preset-chart-nvd3/src/transformProps.js
@@ -111,6 +111,7 @@ export default function transformProps(chartProps) {
   const data = Array.isArray(rawData)
     ? rawData.map(row => ({
         ...row,
+        values: row.values.map(value => ({ ...value })),
         key: formatLabel(row.key, datasource.verboseMap),
       }))
     : rawData;