diff --git a/.changeset/tricky-meals-perform.md b/.changeset/tricky-meals-perform.md
deleted file mode 100644
index 029af8321852..000000000000
--- a/.changeset/tricky-meals-perform.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-'@sveltejs/kit': patch
----
-
-fix: build service workers in IIFE format
diff --git a/packages/kit/src/exports/vite/build/build_service_worker.js b/packages/kit/src/exports/vite/build/build_service_worker.js
index 8bb292dc68c6..919f6be6646e 100644
--- a/packages/kit/src/exports/vite/build/build_service_worker.js
+++ b/packages/kit/src/exports/vite/build/build_service_worker.js
@@ -70,9 +70,6 @@ export async function build_service_worker(
 					'service-worker': service_worker_entry_file
 				},
 				output: {
-					// default 'es' format would be nicer
-					// iife is workaround for https://github.com/vitejs/vite/issues/15379
-					format: 'iife',
 					entryFileNames: '[name].js',
 					assetFileNames: `${kit.appDir}/immutable/assets/[name].[hash][extname]`,
 					inlineDynamicImports: true