diff --git a/lib/jekyll/commands/build.rb b/lib/jekyll/commands/build.rb
index 6dc900c6..67839a17 100644
--- a/lib/jekyll/commands/build.rb
+++ b/lib/jekyll/commands/build.rb
@@ -64,7 +64,7 @@ module Jekyll
         # Returns nothing.
         def watch(site, options)
           Deprecator.gracefully_require 'jekyll-watch'
-          Jekyll::Watch.watch(options)
+          Jekyll::Watcher.watch(options)
         end
 
       end # end of class << self