diff --git a/superset-frontend/src/explore/components/controls/CollectionControl/index.jsx b/superset-frontend/src/explore/components/controls/CollectionControl/index.jsx
index 8cadbf27f..384d23ed0 100644
--- a/superset-frontend/src/explore/components/controls/CollectionControl/index.jsx
+++ b/superset-frontend/src/explore/components/controls/CollectionControl/index.jsx
@@ -80,8 +80,9 @@ class CollectionControl extends React.Component {
   }
 
   onChange(i, value) {
-    Object.assign(this.props.value[i], value);
-    this.props.onChange(this.props.value);
+    const newValue = [...this.props.value];
+    newValue[i] = { ...this.props.value[i], ...value };
+    this.props.onChange(newValue);
   }
 
   onAdd() {