diff --git a/lib/mutant/reporter/cli/printer/subject.rb b/lib/mutant/reporter/cli/printer/subject.rb
index db0cb811..25214ba6 100644
--- a/lib/mutant/reporter/cli/printer/subject.rb
+++ b/lib/mutant/reporter/cli/printer/subject.rb
@@ -145,4 +145,3 @@ module Mutant
     end # CLI
   end # Reporter
 end # Mutant
-
diff --git a/spec/unit/mutant/matcher/method/instance/each_spec.rb b/spec/unit/mutant/matcher/method/instance/each_spec.rb
index 023a6297..f2a3c1e7 100644
--- a/spec/unit/mutant/matcher/method/instance/each_spec.rb
+++ b/spec/unit/mutant/matcher/method/instance/each_spec.rb
@@ -6,7 +6,7 @@ describe Mutant::Matcher::Method::Instance, '#each' do
 
   let(:yields) { [] }
 
-  let(:namespace) do 
+  let(:namespace) do
     klass = self.class
   end
 
@@ -56,7 +56,7 @@ describe Mutant::Matcher::Method::Instance, '#each' do
       class self::Foo
         def bar; end; def bar(arg); end
       end
-    
+
       let(:method_line)  { 2 }
       let(:method_arity) { 1 }
 
diff --git a/spec/unit/mutant/matcher/method/singleton/each_spec.rb b/spec/unit/mutant/matcher/method/singleton/each_spec.rb
index 1fd0ca39..64911fe9 100644
--- a/spec/unit/mutant/matcher/method/singleton/each_spec.rb
+++ b/spec/unit/mutant/matcher/method/singleton/each_spec.rb
@@ -6,7 +6,7 @@ describe Mutant::Matcher::Method::Singleton, '#each' do
 
   let(:yields) { [] }
 
-  let(:namespace) do 
+  let(:namespace) do
     klass = self.class
   end
 
diff --git a/spec/unit/mutant/runner/config/subjects_spec.rb b/spec/unit/mutant/runner/config/subjects_spec.rb
index f0509a6a..2cea27b7 100644
--- a/spec/unit/mutant/runner/config/subjects_spec.rb
+++ b/spec/unit/mutant/runner/config/subjects_spec.rb
@@ -5,7 +5,7 @@ describe Mutant::Runner::Config, '#subjects' do
 
   subject { object.subjects }
 
-  let(:config) do 
+  let(:config) do
     mock(
       'Config',
       :subjects => [mutation_subject],
diff --git a/spec/unit/mutant/runner/mutation/killer_spec.rb b/spec/unit/mutant/runner/mutation/killer_spec.rb
index 0be83d8b..731218d3 100644
--- a/spec/unit/mutant/runner/mutation/killer_spec.rb
+++ b/spec/unit/mutant/runner/mutation/killer_spec.rb
@@ -5,8 +5,8 @@ describe Mutant::Runner::Mutation, '#killer' do
 
   let(:config) do
     mock(
-      'Config', 
-      :reporter => reporter, 
+      'Config',
+      :reporter => reporter,
       :strategy => strategy
     )
   end
@@ -17,7 +17,7 @@ describe Mutant::Runner::Mutation, '#killer' do
   let(:killer)   { mock('Killer')   }
 
   subject { object.killer }
-  
+
   before do
     reporter.stub(:report => reporter)
     strategy.stub(:kill => killer)