diff --git a/build/Gruntfile.coffee b/build/Gruntfile.coffee
index 14fbd6e5d..b48c7a773 100644
--- a/build/Gruntfile.coffee
+++ b/build/Gruntfile.coffee
@@ -69,6 +69,8 @@ module.exports = (grunt) ->
       expand: true
       src: [
         'src/**/*.coffee'
+        'spec/*.coffee'
+        '!spec/*-spec.coffee'
         'exports/**/*.coffee'
         'static/**/*.coffee'
       ]
diff --git a/build/tasks/build-task.coffee b/build/tasks/build-task.coffee
index 0fb967019..343960f61 100644
--- a/build/tasks/build-task.coffee
+++ b/build/tasks/build-task.coffee
@@ -162,7 +162,6 @@ module.exports = (grunt) ->
     for directory in packageDirectories
       cp directory, path.join(appDir, directory), filter: filterPackage
 
-    cp 'spec', path.join(appDir, 'spec'), filter: /fixtures|integration|.+-spec\.coffee/
     cp 'src', path.join(appDir, 'src'), filter: /.+\.(cson|coffee)$/
     cp 'static', path.join(appDir, 'static')