diff --git a/src/components/Graph.react.js b/src/components/Graph.react.js
index 6451b8dc1..7e5c44688 100644
--- a/src/components/Graph.react.js
+++ b/src/components/Graph.react.js
@@ -319,10 +319,7 @@ const graphPropTypes = {
      * Reference the Plotly.extendTraces API for full usage:
      * https://plot.ly/javascript/plotlyjs-function-reference/#plotlyextendtraces
      */
-    extendData: PropTypes.oneOfType([
-        PropTypes.array,
-        PropTypes.object
-    ]),
+    extendData: PropTypes.oneOfType([PropTypes.array, PropTypes.object]),
 
     /**
      * Data from latest restyle event which occurs