diff --git a/src/core/sass/brand.ts b/src/core/sass/brand.ts
index 451ae2e60bd..3ade1aefd33 100644
--- a/src/core/sass/brand.ts
+++ b/src/core/sass/brand.ts
@@ -567,6 +567,15 @@ export async function brandSassLayers(
   const brand = await project.resolveBrand(fileName);
   const sassLayers: SassLayer[] = [];
 
+  if (brand) {
+    sassLayers.push({
+      defaults: '$theme: "brand" !default;',
+      uses: "",
+      functions: "",
+      mixins: "",
+      rules: "",
+    });
+  }
   if (brand?.data.color) {
     sassLayers.push(brandColorLayer(brand, nameMap));
   }