diff --git a/packages/vite/src/node/plugins/manifest.ts b/packages/vite/src/node/plugins/manifest.ts
index 58851fb6268d69..064e20d2142818 100644
--- a/packages/vite/src/node/plugins/manifest.ts
+++ b/packages/vite/src/node/plugins/manifest.ts
@@ -136,7 +136,7 @@ export function manifestPlugin(): Plugin {
       }
 
       const entryCssReferenceIds = cssEntriesMap.get(this.environment)!
-      const entryCssAssetFileNames = new Set(entryCssReferenceIds)
+      const entryCssAssetFileNames = new Set()
       for (const id of entryCssReferenceIds) {
         try {
           const fileName = this.getFileName(id)