diff --git a/lib/dynflow.rb b/lib/dynflow.rb
index 6faea02a..312877c8 100644
--- a/lib/dynflow.rb
+++ b/lib/dynflow.rb
@@ -25,7 +25,7 @@ class << self
     # @return [Dynflow::World, nil]
     def process_world
       return @process_world if defined? @process_world
-      @process_world = Sidekiq.configure_server { |c| c.options[:dynflow_world] }
+      @process_world = Sidekiq.configure_server { |c| c[:dynflow_world] }
       raise "process world is not set" unless @process_world
       @process_world
     end