diff --git a/packages/ui/atoms/Button/Button.twig b/packages/ui/atoms/Button/Button.twig
index f3a57064..774cbbab 100644
--- a/packages/ui/atoms/Button/Button.twig
+++ b/packages/ui/atoms/Button/Button.twig
@@ -52,7 +52,7 @@
           }
         },
         {
-          class: icon_classes,
+          class: icon_classes ?? '',
         },
       )
     } %}