diff --git a/build/tasks/build-task.coffee b/build/tasks/build-task.coffee
index a94b38f75..57d9f7964 100644
--- a/build/tasks/build-task.coffee
+++ b/build/tasks/build-task.coffee
@@ -143,7 +143,7 @@ module.exports = (grunt) ->
     for directory in packageDirectories
       cp directory, path.join(appDir, directory), filter: filterPackage
 
-    cp 'spec', path.join(appDir, 'spec')
+    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')