diff --git a/spec/unit/mutant/cli/classifier/class_methods/build_spec.rb b/spec/unit/mutant/cli/classifier/class_methods/build_spec.rb
index 709d8213..0adf28e6 100644
--- a/spec/unit/mutant/cli/classifier/class_methods/build_spec.rb
+++ b/spec/unit/mutant/cli/classifier/class_methods/build_spec.rb
@@ -2,8 +2,8 @@
 
 require 'spec_helper'
 
-describe Mutant::CLI::Classifier, '.build' do
-  subject { described_class.build(cache, input) }
+describe Mutant::CLI::Classifier, '.run' do
+  subject { described_class.run(cache, input) }
 
   let(:cache) { double('Cache') }
 
diff --git a/spec/unit/mutant/cli/classifier/method/each_spec.rb b/spec/unit/mutant/cli/classifier/method/each_spec.rb
index 83fcd6b6..e46b19c5 100644
--- a/spec/unit/mutant/cli/classifier/method/each_spec.rb
+++ b/spec/unit/mutant/cli/classifier/method/each_spec.rb
@@ -3,7 +3,7 @@
 require 'spec_helper'
 
 describe Mutant::CLI::Classifier::Method, '#each' do
-  let(:object)           { described_class.build(cache, input) }
+  let(:object)           { described_class.run(cache, input) }
   let(:cache)            { Mutant::Cache.new                   }
   let(:instance_method)  { '::TestApp::Literal#string'         }
   let(:singleton_method) { '::TestApp::Literal.string'         }
diff --git a/spec/unit/mutant/cli/classifier/namespace/flat/each_spec.rb b/spec/unit/mutant/cli/classifier/namespace/flat/each_spec.rb
index ee045430..9580fe9c 100644
--- a/spec/unit/mutant/cli/classifier/namespace/flat/each_spec.rb
+++ b/spec/unit/mutant/cli/classifier/namespace/flat/each_spec.rb
@@ -3,7 +3,7 @@
 require 'spec_helper'
 
 describe Mutant::CLI::Classifier::Namespace::Flat, '#each' do
-  let(:object)            { described_class.build(cache, input) }
+  let(:object)            { described_class.run(cache, input) }
   let(:cache)             { Mutant::Cache.new                   }
   let(:known_namespace)   { '::TestApp::Literal'                }
   let(:unknown_namespace) { '::TestApp::Object'                 }
diff --git a/spec/unit/mutant/cli/classifier/namespace/recursive/each_spec.rb b/spec/unit/mutant/cli/classifier/namespace/recursive/each_spec.rb
index a1da8801..9cdb956e 100644
--- a/spec/unit/mutant/cli/classifier/namespace/recursive/each_spec.rb
+++ b/spec/unit/mutant/cli/classifier/namespace/recursive/each_spec.rb
@@ -3,7 +3,7 @@
 require 'spec_helper'
 
 describe Mutant::CLI::Classifier::Namespace::Recursive, '#each' do
-  let(:object)            { described_class.build(cache, "#{input}*") }
+  let(:object)            { described_class.run(cache, "#{input}*") }
   let(:cache)             { Mutant::Cache.new                         }
   let(:known_namespace)   { '::TestApp::Literal'                      }
   let(:unknown_namespace) { '::TestApp::Object'                       }