diff --git a/config/flay.yml b/config/flay.yml
index 48ca586b..a210fa14 100644
--- a/config/flay.yml
+++ b/config/flay.yml
@@ -1,3 +1,3 @@
 ---
 threshold: 16
-total_score: 614
+total_score: 607
diff --git a/lib/mutant/strategy/rspec/dm2/lookup/method.rb b/lib/mutant/strategy/rspec/dm2/lookup/method.rb
index b2a8224d..04509808 100644
--- a/lib/mutant/strategy/rspec/dm2/lookup/method.rb
+++ b/lib/mutant/strategy/rspec/dm2/lookup/method.rb
@@ -106,11 +106,12 @@ module Mutant
               # @api private
               #
               def glob_expression
+                glob_expression = super
                 if method_name == :initialize and !public?
-                  return "#{private_glob_expression} #{base_path}/class_methods/new_spec.rb"
+                  "{#{glob_expression},#{base_path}/class_methods/new_spec.rb}"
+                else
+                  glob_expression
                 end
-
-                super
               end
 
             end # Instance
diff --git a/spec/unit/mutant/strategy/rspec/dm2/lookup/method/instance/spec_files_spec.rb b/spec/unit/mutant/strategy/rspec/dm2/lookup/method/instance/spec_files_spec.rb
index 6fdbca51..fabd5eab 100644
--- a/spec/unit/mutant/strategy/rspec/dm2/lookup/method/instance/spec_files_spec.rb
+++ b/spec/unit/mutant/strategy/rspec/dm2/lookup/method/instance/spec_files_spec.rb
@@ -42,8 +42,8 @@ describe Mutant::Strategy::Rspec::DM2::Lookup::Method::Instance, '#spec_files' d
     end
 
     context 'initialize' do
-      let(:method_name)              { :initialize                                                       }
-      let(:expected_glob_expression) { 'spec/unit/foo/*_spec.rb spec/unit/foo/class_methods/new_spec.rb' }
+      let(:method_name)              { :initialize                                                         }
+      let(:expected_glob_expression) { '{spec/unit/foo/*_spec.rb,spec/unit/foo/class_methods/new_spec.rb}' }
 
       it_should_behave_like this_example_group
     end