diff --git a/activesupport/lib/active_support/cache/strategy/local_cache.rb b/activesupport/lib/active_support/cache/strategy/local_cache.rb
index d83e259a2a..84d9a0e6d8 100644
--- a/activesupport/lib/active_support/cache/strategy/local_cache.rb
+++ b/activesupport/lib/active_support/cache/strategy/local_cache.rb
@@ -27,6 +27,11 @@ module ActiveSupport
                 Thread.current[:#{thread_local_key}] = nil
               end
             EOS
+
+            def klass.to_s
+              "ActiveSupport::Cache::Strategy::LocalCache"
+            end
+
             klass
           end
         end