diff --git a/scss/_dropdown.scss b/scss/_dropdown.scss
index 35bfcf39d3..910d2bebe1 100644
--- a/scss/_dropdown.scss
+++ b/scss/_dropdown.scss
@@ -42,7 +42,7 @@
   --#{$prefix}dropdown-item-padding-x: #{$dropdown-item-padding-x};
   --#{$prefix}dropdown-item-padding-y: #{$dropdown-item-padding-y};
   --#{$prefix}dropdown-header-color: #{$dropdown-header-color};
-  --#{$prefix}dropdown-header-font-size: #{$font-size-sm};
+  --#{$prefix}dropdown-header-font-size: #{$dropdown-header-font-size};
   --#{$prefix}dropdown-header-padding-x: #{$dropdown-header-padding-x};
   --#{$prefix}dropdown-header-padding-y: #{$dropdown-header-padding-y};
   // scss-docs-end dropdown-css-vars