diff --git a/packages/theme-chalk/src/mixins/mixins.scss b/packages/theme-chalk/src/mixins/mixins.scss
index 298d21eb8b..b6b10949fb 100644
--- a/packages/theme-chalk/src/mixins/mixins.scss
+++ b/packages/theme-chalk/src/mixins/mixins.scss
@@ -6,7 +6,10 @@
 @forward '_var';
 @use 'config' as *;
 @use 'sass:string';
-@use "sass:map";
+@use 'sass:map';
+
+$B: null;
+$E: null;
 
 // Break-points
 @mixin res($key, $map: $breakpoints) {