diff --git a/packages/theme/layout-default/style/theme-default.less b/packages/theme/layout-default/style/theme-default.less
index 5ca6e0d60..f9db4029e 100644
--- a/packages/theme/layout-default/style/theme-default.less
+++ b/packages/theme/layout-default/style/theme-default.less
@@ -2,7 +2,7 @@
 @alain-default-prefix: ~'.@{alain-default-name}';
 @alain-default-zindex: @zindex-base;
 @alain-default-ease: cubic-bezier(0.25, 0, 0.15, 1);
-@alain-default-header-hg: 64px;
+@alain-default-header-hg: ~'var(--@{alain-default-name}-header-hg, 64px)';
 @alain-default-header-bg: @primary-color;
 @alain-default-header-padding: @layout-gutter * 2;
 @alain-default-header-search-enabled: true;