diff --git a/packages/styles/scss/components/dropdown/_dropdown.scss b/packages/styles/scss/components/dropdown/_dropdown.scss
index 8cb2d47ae739..36e082b47e28 100644
--- a/packages/styles/scss/components/dropdown/_dropdown.scss
+++ b/packages/styles/scss/components/dropdown/_dropdown.scss
@@ -481,6 +481,9 @@
     background-color: transparent;
     border-block-end-color: $border-subtle;
   }
+  .#{$prefix}--dropdown--inline.#{$prefix}--dropdown--readonly {
+    border-block-end-color: transparent;
+  }
 
   .#{$prefix}--dropdown--readonly .#{$prefix}--list-box__field,
   .#{$prefix}--dropdown--readonly .#{$prefix}--list-box__menu-icon {