diff --git a/styles/components/_c-main-header.scss b/styles/components/_c-main-header.scss
index 75863a2e9..a81d6bc5e 100644
--- a/styles/components/_c-main-header.scss
+++ b/styles/components/_c-main-header.scss
@@ -19,7 +19,7 @@ $au-main-header-divider-rotation: -19deg !default;
 
 .au-c-main-header {
   position: relative;
-  z-index: var(--au-z-index-alpha);
+  z-index: var(--au-z-index-beta);
   display: flex;
   justify-content: space-between;
   align-items: center;