diff --git a/lib/limiter/rate_queue.rb b/lib/limiter/rate_queue.rb
index 4dd7591..90f8204 100644
--- a/lib/limiter/rate_queue.rb
+++ b/lib/limiter/rate_queue.rb
@@ -57,7 +57,7 @@ def unbalanced_ring
     end
 
     def balanced_ring
-      (0...@size).map { |i| base_time + (gap * i) }
+      Array.new(@size) { |i| base_time + (gap * i) }
     end
 
     def gap