diff --git a/src/app/js/formats/vega/component/tree-map/TreeMapAdmin.js b/src/app/js/formats/vega/component/tree-map/TreeMapAdmin.js
index 855feba1a..b0e449aef 100644
--- a/src/app/js/formats/vega/component/tree-map/TreeMapAdmin.js
+++ b/src/app/js/formats/vega/component/tree-map/TreeMapAdmin.js
@@ -12,7 +12,6 @@ import {
     FormatDataParamsFieldSet,
 } from '../../../utils/components/field-set/FormatFieldSets';
 import {
-    Box,
     FormControlLabel,
     FormGroup,
     MenuItem,
@@ -139,11 +138,7 @@ const TreeMapAdmin = (props) => {
     };
 
     const handleColors = (colors) => {
-        updateAdminArgs(
-            'colors',
-            colors.split(' ') || defaultArgs.colors,
-            props,
-        );
+        updateAdminArgs('colors', colors || defaultArgs.colors, props);
     };
 
     const handleLayout = (e) => {