diff --git a/actionpack/lib/abstract_controller/caching.rb b/actionpack/lib/abstract_controller/caching.rb
index ce6b757c3c..5e9cb4d2f9 100644
--- a/actionpack/lib/abstract_controller/caching.rb
+++ b/actionpack/lib/abstract_controller/caching.rb
@@ -15,7 +15,7 @@ module AbstractController
       end
 
       def cache_store=(store)
-        config.cache_store = ActiveSupport::Cache.lookup_store(store)
+        config.cache_store = ActiveSupport::Cache.lookup_store(*store)
       end
 
       private
diff --git a/activesupport/lib/active_support/cache.rb b/activesupport/lib/active_support/cache.rb
index fc17d17bef..b7c029018b 100644
--- a/activesupport/lib/active_support/cache.rb
+++ b/activesupport/lib/active_support/cache.rb
@@ -54,7 +54,6 @@ module ActiveSupport
       #   ActiveSupport::Cache.lookup_store(MyOwnCacheStore.new)
       #   # => returns MyOwnCacheStore.new
       def lookup_store(store = nil, *parameters)
-
         case store
         when Symbol
           options = parameters.extract_options!