diff --git a/lib/x/errors/too_many_requests.rb b/lib/x/errors/too_many_requests.rb
index 228fa81..2530c1c 100644
--- a/lib/x/errors/too_many_requests.rb
+++ b/lib/x/errors/too_many_requests.rb
@@ -44,7 +44,7 @@ def next_available_in
     private
 
     def limits
-      @limits ||= response.to_hash.keys.filter_map { |k, _v| k.match(/x-(.*-limit.*)-limit/)&.captures&.first }
+      @limits ||= response.to_hash.keys.filter_map { |k| k.match(/x-(.*-limit.*)-limit/)&.captures&.first }
     end
   end
 end