diff --git a/activerecord/lib/active_record/connection_adapters/statement_pool.rb b/activerecord/lib/active_record/connection_adapters/statement_pool.rb
index 57463dd749..dcd96d9899 100644
--- a/activerecord/lib/active_record/connection_adapters/statement_pool.rb
+++ b/activerecord/lib/active_record/connection_adapters/statement_pool.rb
@@ -1,6 +1,6 @@
 module ActiveRecord
   module ConnectionAdapters
-    class StatementPool
+    class StatementPool # :nodoc:
       include Enumerable
 
       def initialize(max = 1000)