diff --git a/lib/naught/basic_object.rb b/lib/naught/basic_object.rb
index e3acb7f..fc0c0ac 100644
--- a/lib/naught/basic_object.rb
+++ b/lib/naught/basic_object.rb
@@ -4,7 +4,11 @@ class BasicObject < ::BasicObject
     end
   else
     class BasicObject #:nodoc:
-      keep = %w[! != == __id__ __send__ equal? instance_eval instance_exec method_missing singleton_method_added singleton_method_removed singleton_method_undefined]
+      keep = %w[
+        ! != == __id__ __send__ equal? instance_eval instance_exec
+        method_missing singleton_method_added singleton_method_removed
+        singleton_method_undefined
+      ]
       instance_methods.each do |method_name|
         undef_method(method_name) unless keep.include?(method_name)
       end
diff --git a/lib/naught/null_class_builder/commands/impersonate.rb b/lib/naught/null_class_builder/commands/impersonate.rb
index 5bdeefb..11c3840 100644
--- a/lib/naught/null_class_builder/commands/impersonate.rb
+++ b/lib/naught/null_class_builder/commands/impersonate.rb
@@ -2,8 +2,7 @@ module Naught::NullClassBuilder::Commands
   class Impersonate < Naught::NullClassBuilder::Commands::Mimic
     def initialize(builder, class_to_impersonate, options = {})
       super
-
-      builder.base_class   = class_to_impersonate
+      builder.base_class = class_to_impersonate
     end
   end
 end
diff --git a/lib/naught/null_class_builder/commands/mimic.rb b/lib/naught/null_class_builder/commands/mimic.rb
index d6742a8..1156ebd 100644
--- a/lib/naught/null_class_builder/commands/mimic.rb
+++ b/lib/naught/null_class_builder/commands/mimic.rb
@@ -27,11 +27,7 @@ def call
     private
 
     def root_class_of(klass)
-      if klass.ancestors.include?(Object)
-        Object
-      else
-        Naught::BasicObject
-      end
+      klass.ancestors.include?(Object) ? Object : Naught::BasicObject
     end
 
     def methods_to_stub
diff --git a/lib/naught/null_class_builder/commands/predicates_return.rb b/lib/naught/null_class_builder/commands/predicates_return.rb
index be72868..6952e58 100644
--- a/lib/naught/null_class_builder/commands/predicates_return.rb
+++ b/lib/naught/null_class_builder/commands/predicates_return.rb
@@ -20,8 +20,7 @@ def define_method_missing(subject)
       subject.module_exec(@predicate_return_value) do |return_value|
         if subject.method_defined?(:method_missing)
           original_method_missing = instance_method(:method_missing)
-          define_method(:method_missing) do
-            |method_name, *args, &block|
+          define_method(:method_missing) do |method_name, *args, &block|
             if method_name.to_s.end_with?('?')
               return_value
             else
diff --git a/lib/naught/null_class_builder/commands/traceable.rb b/lib/naught/null_class_builder/commands/traceable.rb
index 958c14a..93a7485 100644
--- a/lib/naught/null_class_builder/commands/traceable.rb
+++ b/lib/naught/null_class_builder/commands/traceable.rb
@@ -8,11 +8,8 @@ def call
           attr_reader :__file__, :__line__
 
           def initialize(options = {})
-            backtrace = if RUBY_VERSION.to_f == 1.9 && RUBY_PLATFORM != 'java'
-              options.fetch(:caller) { Kernel.caller(4) }
-            else
-              options.fetch(:caller) { Kernel.caller(3) }
-            end
+            range = (RUBY_VERSION.to_f == 1.9 && RUBY_PLATFORM != 'java') ? 4 : 3
+            backtrace = options.fetch(:caller) { Kernel.caller(range) }
             @__file__, line, _ = backtrace[0].split(':')
             @__line__ = line.to_i
           end
diff --git a/spec/pebble_spec.rb b/spec/pebble_spec.rb
index 0992ed9..caba3ca 100644
--- a/spec/pebble_spec.rb
+++ b/spec/pebble_spec.rb
@@ -46,7 +46,8 @@ def call_method_inside_nested_block(thing)
   end
 
   context 'when is called from a block' do
-    it 'prints the indication of a block', :pending => jruby? || rubinius? || ruby_18? do
+    it 'prints the indication of a block',
+       :pending => jruby? || rubinius? || ruby_18? do
       expect(test_output).to receive(:puts).twice.
         with(/from block/)
       Caller.new.call_method_inside_block(null)
@@ -60,7 +61,8 @@ def call_method_inside_nested_block(thing)
   end
 
   context 'when is called from many levels blocks' do
-    it 'prints the indication of blocks and its levels', :pending => jruby? || rubinius? || ruby_18? do
+    it 'prints the indication of blocks and its levels',
+       :pending => jruby? || rubinius? || ruby_18? do
       expect(test_output).to receive(:puts).exactly(4).times.
         with(/from block \(2 levels\)/)
       Caller.new.call_method_inside_nested_block(null)