diff --git a/packages/common/utils.js b/packages/common/utils.js
index 649c2092e1a0174bfe033aea30c3b83e94b6d98c..c9b84165da0563f4780cb063302bcf861920f381 100644
--- a/packages/common/utils.js
+++ b/packages/common/utils.js
@@ -2,6 +2,7 @@ import {css} from 'lit-element';
 import env from './env.js';
 
 export function getThemeCSS() {
+    // language=css
     return css`
         :host {
             --vpu-primary-bg-color: var(--vpu-override-primary-bg-color, #007bff);