diff --git a/packages/vite/src/node/plugins/css.ts b/packages/vite/src/node/plugins/css.ts
index 1956918658008f..4081edf2c12055 100644
--- a/packages/vite/src/node/plugins/css.ts
+++ b/packages/vite/src/node/plugins/css.ts
@@ -208,7 +208,9 @@ export function cssPlugin(config: ResolvedConfig): Plugin {
                 isCSSRequest(file)
                   ? moduleGraph.createFileOnlyEntry(file)
                   : await moduleGraph.ensureEntryFromUrl(
-                      await fileToUrl(file, config, this)
+                      (
+                        await fileToUrl(file, config, this)
+                      ).replace(config.base, '/')
                     )
               )
             }