diff --git a/core/scripts/css/check.js b/core/scripts/css/check.js
index a2878e90ed88ba041cd8d3837d90254bd7b32009..6bb94703383666d81faa9330cddd5d31ef9ed9f4 100644
--- a/core/scripts/css/check.js
+++ b/core/scripts/css/check.js
@@ -14,7 +14,7 @@ module.exports = (filePath) => {
         return;
       }
       if (code !== data.toString()) {
-        log(`'${filePath}' is not updated.`);
+        log(`'${filePath}' does not match its CSS file. Recompile the CSS with: yarn run build:css`);
         process.exitCode = 1;
       }
     });