diff --git a/Libraries/LibWeb/ServiceWorker/Job.cpp b/Libraries/LibWeb/ServiceWorker/Job.cpp
index 267d1a178cc..f616c6c44b3 100644
--- a/Libraries/LibWeb/ServiceWorker/Job.cpp
+++ b/Libraries/LibWeb/ServiceWorker/Job.cpp
@@ -289,10 +289,7 @@ static void update(JS::VM& vm, GC::Ref<Job> job)
             auto join_paths_with_slash = [](URL::URL const& url) -> ByteString {
                 StringBuilder builder;
                 builder.append('/');
-                for (auto const& component : url.paths()) {
-                    builder.append(component);
-                    builder.append('/');
-                }
+                builder.join('/', url.paths());
                 return builder.to_byte_string();
             };