diff --git a/src/reducers/controls.js b/src/reducers/controls.js
index c5537a36..b6796f54 100644
--- a/src/reducers/controls.js
+++ b/src/reducers/controls.js
@@ -141,7 +141,7 @@ const Controls = (
       // important fields from the ranges element.
       //
       if (!state.schema) {
-        state.schema = createSchemaByDataSniffing(data.ranges);
+        state.schema = createSchemaByDataSniffing(action.data.data.ranges);
       }
 
       /* Set viewable world to the provided cell data */