diff --git a/lib/css.helper.js b/lib/css.helper.js
index f527b34d8d8e900633cf0863f29f30d375c70727..ec91e2e355bcc13a305fa74b30d4f6536abc6434 100644
--- a/lib/css.helper.js
+++ b/lib/css.helper.js
@@ -271,7 +271,7 @@ ${uniqNames.map(([o, l]) => `  "${o}": ${l}`).join(',\n')}
       filename: fullpath,
       cssModules: {
         dashedIdents: options?.dashedIndents,
-        pattern: options?.pattern ?? `${opt?.prefix ?? ''}__[local]_[hash]__${opt?.suffix ?? ''}`
+        pattern: options?.pattern ?? `${opt?.prefix ? `${opt.prefix}__` : ''}[local]_[hash]${opt?.suffix ? `__${opt.suffix}` : ''}`
       },
       drafts: {
         customMedia: true,