diff --git a/.changeset/tame-kangaroos-film.md b/.changeset/tame-kangaroos-film.md
new file mode 100644
index 000000000000..022cf57590e6
--- /dev/null
+++ b/.changeset/tame-kangaroos-film.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+fix: don't copy public folder in service worker build
diff --git a/.gitignore b/.gitignore
index f53c51190a59..679d1c89e690 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,4 @@ vite.config.js.timestamp-*
 .vercel
 .test-tmp
 symlink-from
+.idea/
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 b5493f687912..89387ae03cd0 100644
--- a/packages/kit/src/exports/vite/build/build_service_worker.js
+++ b/packages/kit/src/exports/vite/build/build_service_worker.js
@@ -79,8 +79,9 @@ export async function build_service_worker(
 			outDir: `${out}/client`,
 			emptyOutDir: false
 		},
-		define: vite_config.define,
 		configFile: false,
+		define: vite_config.define,
+		publicDir: false,
 		resolve: {
 			alias: [...get_config_aliases(kit), { find: '$service-worker', replacement: service_worker }]
 		}