diff --git a/resources/js/blocks/lib/classNames.js b/resources/js/blocks/lib/classNames.js
index 2de54fd9..70c1c79d 100644
--- a/resources/js/blocks/lib/classNames.js
+++ b/resources/js/blocks/lib/classNames.js
@@ -29,7 +29,7 @@ export function sectionClassNames(attributes, defaultClasses = '', extraClasses
   if('padding_bottom'in attributes && !attributes.padding_bottom)
     classNames.push('section-zero-bottom');
 
-  if('background_colour' in attributes && attributes.background_colour) {
+  if('background_hex' in attributes && attributes.background_hex) {
     let bg = `bg-${ attributes.background_colour }`;
 
     if(