diff --git a/lib/language_pack/rails4.rb b/lib/language_pack/rails4.rb
index a4a4b183a..27041f96b 100644
--- a/lib/language_pack/rails4.rb
+++ b/lib/language_pack/rails4.rb
@@ -68,7 +68,7 @@ def default_assets_cache
 
   def cleanup
     super
-    return unless assets_compile_enabled?
+    return if assets_compile_enabled?
     return unless Dir.exist?(default_assets_cache)
     FileUtils.remove_dir(default_assets_cache)
   end