diff --git a/spec/integration/loader_spec.rb b/spec/integration/loader_spec.rb
index e3a07680..42937251 100644
--- a/spec/integration/loader_spec.rb
+++ b/spec/integration/loader_spec.rb
@@ -11,7 +11,7 @@ if "".respond_to?(:to_ast)
     let(:context) { Mutant::Context::Constant.build(CodeLoadingSubject) }
     let(:node)    { 'def foo; :bar; end'.to_ast                         }
     let(:root)    { context.root(node)                                  }
-                                                                     
+                             
     subject       { Mutant::Loader.load(root)                           }
 
     before { subject }
diff --git a/spec/integration/method_matching_spec.rb b/spec/integration/method_matching_spec.rb
index 7005d7d6..77815efd 100644
--- a/spec/integration/method_matching_spec.rb
+++ b/spec/integration/method_matching_spec.rb
@@ -12,7 +12,7 @@ if "".respond_to?(:to_ast)
       eval(body)
       File.stub(:read => body)
     end
-  
+
     let(:defaults) { {} }
 
     context 'on instance methods' do
diff --git a/spec/unit/mutant/mutator/call/class_methods/each_spec.rb b/spec/unit/mutant/mutator/call/class_methods/each_spec.rb
index 66b260dc..f9b5a7dd 100644
--- a/spec/unit/mutant/mutator/call/class_methods/each_spec.rb
+++ b/spec/unit/mutant/mutator/call/class_methods/each_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe Mutant::Mutator::Call,'.each' do
+describe Mutant::Mutator::Call, '.each' do
   pending 'send' do
     context 'to self' do
 
diff --git a/spec/unit/mutant/mutator/each_spec.rb b/spec/unit/mutant/mutator/each_spec.rb
index 9f2a99f0..d7502835 100644
--- a/spec/unit/mutant/mutator/each_spec.rb
+++ b/spec/unit/mutant/mutator/each_spec.rb
@@ -1,5 +1,5 @@
 # This file is the sandbox for new mutations.
-# Once finished mutation test will be moved to class specfic 
+# Once finished mutation test will be moved to class specfic
 # file.
 
 require 'spec_helper'
@@ -28,14 +28,14 @@ describe Mutant::Mutator, '.each' do
 
     let(:mutations) do
       mutations = []
-    
+
       # Mutation of each statement in block
       mutations << "foo\nself.bar"
       mutations << "self.foo\nbar"
 
      ## Remove statement in block
-      mutations << [:block,'self.foo'.to_sexp]
-      mutations << [:block,'self.bar'.to_sexp]
+      mutations << [:block, 'self.foo'.to_sexp]
+      mutations << [:block, 'self.bar'.to_sexp]
     end
 
     it_should_behave_like 'a mutation enumerator method'
diff --git a/spec/unit/mutant/mutator/literal/array/class_methods/each_spec.rb b/spec/unit/mutant/mutator/literal/array/class_methods/each_spec.rb
index 41f67949..ddf86a27 100644
--- a/spec/unit/mutant/mutator/literal/array/class_methods/each_spec.rb
+++ b/spec/unit/mutant/mutator/literal/array/class_methods/each_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe Mutant::Mutator::Literal::Array,'.each' do
+describe Mutant::Mutator::Literal::Array, '.each' do
   context 'array literal' do
     let(:source) { '[true, false]' }
 
@@ -9,7 +9,7 @@ describe Mutant::Mutator::Literal::Array,'.each' do
 
       # Literal replaced with nil
       mutations << [:nil]
-    
+
       # Mutation of each element in array
       mutations << '[nil, false]'
       mutations << '[false, false]'
@@ -26,7 +26,7 @@ describe Mutant::Mutator::Literal::Array,'.each' do
       # Extra element
       mutations << '[true, false, nil]'
     end
-  
+
     it_should_behave_like 'a mutation enumerator method'
   end
 end
diff --git a/spec/unit/mutant/mutator/literal/boolean/class_methods/each_spec.rb b/spec/unit/mutant/mutator/literal/boolean/class_methods/each_spec.rb
index 1751bb71..ed5d08b5 100644
--- a/spec/unit/mutant/mutator/literal/boolean/class_methods/each_spec.rb
+++ b/spec/unit/mutant/mutator/literal/boolean/class_methods/each_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe Mutant::Mutator::Literal::Boolean,'.each' do
+describe Mutant::Mutator::Literal::Boolean, '.each' do
   context 'true literal' do
     let(:source) { 'true' }
 
diff --git a/spec/unit/mutant/mutator/literal/empty_array/class_methods/each_spec.rb b/spec/unit/mutant/mutator/literal/empty_array/class_methods/each_spec.rb
index 687358ea..d712fe54 100644
--- a/spec/unit/mutant/mutator/literal/empty_array/class_methods/each_spec.rb
+++ b/spec/unit/mutant/mutator/literal/empty_array/class_methods/each_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe Mutant::Mutator::Literal::EmptyArray,'.each' do
+describe Mutant::Mutator::Literal::EmptyArray, '.each' do
   context 'empty array literal' do
     let(:source) { '[]' }
 
diff --git a/spec/unit/mutant/mutator/literal/fixnum/class_methods/each_spec.rb b/spec/unit/mutant/mutator/literal/fixnum/class_methods/each_spec.rb
index 049ba192..a716cb04 100644
--- a/spec/unit/mutant/mutator/literal/fixnum/class_methods/each_spec.rb
+++ b/spec/unit/mutant/mutator/literal/fixnum/class_methods/each_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe Mutant::Mutator::Literal::Fixnum,'.each' do
+describe Mutant::Mutator::Literal::Fixnum, '.each' do
   let(:random_fixnum) { 5 }
 
   context 'fixnum literal' do
diff --git a/spec/unit/mutant/mutator/literal/float/class_methods/each_spec.rb b/spec/unit/mutant/mutator/literal/float/class_methods/each_spec.rb
index de14143d..e291bf3f 100644
--- a/spec/unit/mutant/mutator/literal/float/class_methods/each_spec.rb
+++ b/spec/unit/mutant/mutator/literal/float/class_methods/each_spec.rb
@@ -15,7 +15,7 @@ describe Mutant::Mutator::Literal::Float, '.each' do
       mutations << [:negate, [:call, [:lit, 1.0], :/, [:arglist, [:lit, 0.0]]]]
       mutations << [:lit, -10.0]
     end
-  
+
     let(:random_float) { 7.123 }
 
     before do
diff --git a/spec/unit/mutant/mutator/literal/range/class_methods/each_spec.rb b/spec/unit/mutant/mutator/literal/range/class_methods/each_spec.rb
index 6fc04a56..b7cdcec8 100644
--- a/spec/unit/mutant/mutator/literal/range/class_methods/each_spec.rb
+++ b/spec/unit/mutant/mutator/literal/range/class_methods/each_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe Mutant::Mutator::Literal::Range,'.each' do
+describe Mutant::Mutator::Literal::Range, '.each' do
   context 'inclusive range literal' do
     let(:source) { '1..100' }
 
diff --git a/spec/unit/mutant/mutator/literal/regex/class_methods/each_spec.rb b/spec/unit/mutant/mutator/literal/regex/class_methods/each_spec.rb
index 8dda0cbb..7dac8625 100644
--- a/spec/unit/mutant/mutator/literal/regex/class_methods/each_spec.rb
+++ b/spec/unit/mutant/mutator/literal/regex/class_methods/each_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe Mutant::Mutator::Literal::Regex,'.each' do
+describe Mutant::Mutator::Literal::Regex, '.each' do
   let(:random_string) { 'bar' }
 
   context 'regexp literal' do
diff --git a/spec/unit/mutant/mutator/literal/string/class_methods/each_spec.rb b/spec/unit/mutant/mutator/literal/string/class_methods/each_spec.rb
index 6881e8fe..2e62ead4 100644
--- a/spec/unit/mutant/mutator/literal/string/class_methods/each_spec.rb
+++ b/spec/unit/mutant/mutator/literal/string/class_methods/each_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe Mutant::Mutator::Literal::String,'.each' do
+describe Mutant::Mutator::Literal::String, '.each' do
   let(:random_string) { 'bar' }
 
   context 'string literal' do
diff --git a/spec/unit/mutant/mutator/literal/symbol/class_methods/each_spec.rb b/spec/unit/mutant/mutator/literal/symbol/class_methods/each_spec.rb
index c242a586..9469af2b 100644
--- a/spec/unit/mutant/mutator/literal/symbol/class_methods/each_spec.rb
+++ b/spec/unit/mutant/mutator/literal/symbol/class_methods/each_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe Mutant::Mutator::Literal::Symbol,'.each' do
+describe Mutant::Mutator::Literal::Symbol, '.each' do
   let(:random_string) { 'bar' }
 
   context 'symbol literal' do
diff --git a/spec/unit/mutant/mutator/self/class_methods/each_spec.rb b/spec/unit/mutant/mutator/self/class_methods/each_spec.rb
index e1b43bee..5f8db2e1 100644
--- a/spec/unit/mutant/mutator/self/class_methods/each_spec.rb
+++ b/spec/unit/mutant/mutator/self/class_methods/each_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe Mutant::Mutator::Self,'.each' do
+describe Mutant::Mutator::Self, '.each' do
   let(:source) { 'self' }
 
   let(:mutations) do