diff --git a/packages/system/src/styles/style.css b/packages/system/src/styles/style.css
index dd9cbaed..a6e5f9da 100644
--- a/packages/system/src/styles/style.css
+++ b/packages/system/src/styles/style.css
@@ -160,6 +160,7 @@
   }
 
   &.horizontal &-button {
+    border-bottom: none;
     border-right: 1px solid
       var(
         --xy-controls-button-border-color-props,