diff --git a/packages/astro/src/core/build/plugins/plugin-middleware.ts b/packages/astro/src/core/build/plugins/plugin-middleware.ts
index 47ff4b863cf3d..5981a37231a4c 100644
--- a/packages/astro/src/core/build/plugins/plugin-middleware.ts
+++ b/packages/astro/src/core/build/plugins/plugin-middleware.ts
@@ -25,7 +25,7 @@ export function vitePluginMiddleware(
 		async resolveId(id) {
 			if (id === MIDDLEWARE_MODULE_ID) {
 				const middlewareId = await this.resolve(
-					`${opts.settings.config.srcDir.pathname}/${MIDDLEWARE_PATH_SEGMENT_NAME}`
+					`${decodeURI(opts.settings.config.srcDir.pathname)}${MIDDLEWARE_PATH_SEGMENT_NAME}`
 				);
 				if (middlewareId) {
 					resolvedMiddlewareId = middlewareId.id;
@@ -58,6 +58,7 @@ export function vitePluginMiddleware(
 					continue;
 				}
 				if (chunk.fileName === 'middleware.mjs') {
+					console.log(chunkName)
 					const outputDirectory = getOutputDirectory(opts.settings.config);
 					internals.middlewareEntryPoint = new URL(chunkName, outputDirectory);
 				}