diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 223b5ac..f44bcc2 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -96,7 +96,6 @@ def set_hieradata(hieradata)
   c.mock_with :rspec
 
   c.module_path = File.join(fixture_path, 'modules')
-  c.manifest_dir = File.join(fixture_path, 'manifests') if c.respond_to?(:manifest_dir)
 
   c.hiera_config = File.join(fixture_path, 'hieradata', 'hiera.yaml')