diff --git a/superset/assets/src/explore/controls.jsx b/superset/assets/src/explore/controls.jsx
index 3c239abefb5e0..feba2652562eb 100644
--- a/superset/assets/src/explore/controls.jsx
+++ b/superset/assets/src/explore/controls.jsx
@@ -1849,7 +1849,7 @@ export const controls = {
     'Either a numerical column or `Auto`, which scales the point based ' +
     'on the largest cluster'),
     mapStateToProps: state => ({
-      choices: columnChoices(state.datasource),
+      choices: formatSelectOptions(['Auto']).concat(columnChoices(state.datasource)),
     }),
   },