diff --git a/middleman-core/lib/middleman-core/core_extensions/data.rb b/middleman-core/lib/middleman-core/core_extensions/data.rb
index 026e884f..a9e8629f 100644
--- a/middleman-core/lib/middleman-core/core_extensions/data.rb
+++ b/middleman-core/lib/middleman-core/core_extensions/data.rb
@@ -25,11 +25,11 @@ module Middleman
         # parsing config.rb
         def initialize
           self.files.changed DataStore.matcher do |file|
-            self.data.touch_file(file) if file.start_with?("#{config[data_dir]}/")
+            self.data.touch_file(file) if file.start_with?("#{config[:data_dir]}/")
           end
 
           self.files.deleted DataStore.matcher do |file|
-            self.data.remove_file(file) if file.start_with?("#{config[data_dir]}/")
+            self.data.remove_file(file) if file.start_with?("#{config[:data_dir]}/")
           end
 
           super