diff --git a/lib/serviceworker/router.rb b/lib/serviceworker/router.rb
index f9a6f16..e4e42ca 100644
--- a/lib/serviceworker/router.rb
+++ b/lib/serviceworker/router.rb
@@ -51,6 +51,7 @@ def any?
 
     def match_route(env)
       path = env[PATH_INFO]
+      path = '/' if path == ''
       @routes.lazy.map { |route| route.match(path) }.detect(&:itself)
     end
   end