diff --git a/packages/vite/src/node/server/sourcemap.ts b/packages/vite/src/node/server/sourcemap.ts
index 431233bca8245d..864082bc7b766b 100644
--- a/packages/vite/src/node/server/sourcemap.ts
+++ b/packages/vite/src/node/server/sourcemap.ts
@@ -12,7 +12,7 @@ export async function injectSourcesContent(
   await Promise.all(
     map.sources.map(async (sourcePath, i) => {
       map.sourcesContent![i] = await fs.readFile(
-        path.resolve(sourceRoot, sourcePath),
+        path.resolve(sourceRoot, decodeURI(sourcePath)),
         'utf-8'
       )
     })