diff --git a/packages/strapi-helper-plugin/lib/src/components/BackHeader/styles.scss b/packages/strapi-helper-plugin/lib/src/components/BackHeader/styles.scss
index 787be8cfea..d045a43b46 100644
--- a/packages/strapi-helper-plugin/lib/src/components/BackHeader/styles.scss
+++ b/packages/strapi-helper-plugin/lib/src/components/BackHeader/styles.scss
@@ -4,7 +4,7 @@
   height: 6rem;
   width: 6.5rem;
   line-height: 6rem;
-  z-index: 999999;
+  z-index: 999;
   text-align: center;
   background-color: #FFFFFF;
   color: #81848A;