diff --git a/app/models/cards/columns.rb b/app/models/cards/columns.rb
index 269e06797..7af28d1b9 100644
--- a/app/models/cards/columns.rb
+++ b/app/models/cards/columns.rb
@@ -29,7 +29,7 @@ class Cards::Columns
   end
 
   def cache_key
-    ActiveSupport::Cache.expand_cache_key([considering, on_deck, doing, closed, Workflow.all, user_filtering])
+    ActiveSupport::Cache.expand_cache_key([ considering, on_deck, doing, closed, Workflow.all, user_filtering ])
   end
 
   private
diff --git a/app/models/cards/columns/column.rb b/app/models/cards/columns/column.rb
index 91e0b3b0f..ff7d9b461 100644
--- a/app/models/cards/columns/column.rb
+++ b/app/models/cards/columns/column.rb
@@ -13,6 +13,6 @@ class Cards::Columns::Column
   end
 
   def cache_key
-    ActiveSupport::Cache.expand_cache_key([cards])
+    ActiveSupport::Cache.expand_cache_key([ cards ])
   end
 end