diff --git a/src/bundle/ui-dev/src/modules/common/helpers/css.class.names.js b/src/bundle/ui-dev/src/modules/common/helpers/css.class.names.js
index 1556237bd5..06550c523c 100644
--- a/src/bundle/ui-dev/src/modules/common/helpers/css.class.names.js
+++ b/src/bundle/ui-dev/src/modules/common/helpers/css.class.names.js
@@ -5,7 +5,11 @@ export const createCssClassNames = (classes) => {
 
     return Object.entries(classes)
         .reduce((total, [name, condition]) => {
-            return `${total} ${condition ? name : ''}`;
+            if (condition) {
+                return `${total} ${name}`;
+            }
+
+            return total;
         }, '')
         .trim();
 };