2 files changed, 4 insertions, 6 deletions
diff --git a/activesupport/lib/active_support/cache.rb b/activesupport/lib/active_support/cache.rb
index 2f1143e610..07c83774df 100644
--- a/activesupport/lib/active_support/cache.rb
+++ b/activesupport/lib/active_support/cache.rb
@@ -7,10 +7,13 @@ module ActiveSupport
 
       case store
       when Symbol
+        require "active_support/cache/#{store.to_s}"
+
         store_class_name = (store == :drb_store ? "DRbStore" : store.to_s.camelize)
         store_class = ActiveSupport::Cache.const_get(store_class_name)
         store_class.new(*parameters)
       when nil
+        require "active_support/cache/memory_store"
         ActiveSupport::Cache::MemoryStore.new
       else
         store
@@ -137,9 +140,3 @@ module ActiveSupport
     end
   end
 end
-
-require 'active_support/cache/file_store'
-require 'active_support/cache/memory_store'
-require 'active_support/cache/drb_store'
-require 'active_support/cache/mem_cache_store'
-require 'active_support/cache/compressed_mem_cache_store'
diff --git a/activesupport/lib/active_support/cache/drb_store.rb b/activesupport/lib/active_support/cache/drb_store.rb
index b80c2ee4d5..f06f08f566 100644
--- a/activesupport/lib/active_support/cache/drb_store.rb
+++ b/activesupport/lib/active_support/cache/drb_store.rb
@@ -1,4 +1,5 @@
 require 'drb'
+require 'active_support/cache/memory_store'
 
 module ActiveSupport
   module Cache