diff --git a/spec/captcha_spec.rb b/spec/captcha_spec.rb
index 6b971f6..4e55dc3 100644
--- a/spec/captcha_spec.rb
+++ b/spec/captcha_spec.rb
@@ -11,7 +11,7 @@ describe RuCaptcha::Captcha do
     end
 
     it 'should not include [0ol1]' do
-      10000.times do
+      10_000.times do
         expect(RuCaptcha::Captcha.random_chars_without_cache).not_to match(/[0ol1]/i)
       end
     end
diff --git a/spec/controller_helpers_spec.rb b/spec/controller_helpers_spec.rb
index 34a1e5a..f1db008 100644
--- a/spec/controller_helpers_spec.rb
+++ b/spec/controller_helpers_spec.rb
@@ -48,7 +48,7 @@ describe RuCaptcha do
     end
 
     describe 'Incorrect chars' do
-      it "should work" do
+      it 'should work' do
         simple.session[:_rucaptcha_at] = Time.now.to_i - 60
         simple.session[:_rucaptcha] = 'abcd'
         simple.params[:_rucaptcha] = 'd123'
@@ -57,7 +57,7 @@ describe RuCaptcha do
     end
 
     describe 'Expires Session key' do
-      it "should work" do
+      it 'should work' do
         simple.session[:_rucaptcha_at] = Time.now.to_i - 121
         simple.session[:_rucaptcha] = 'abcd'
         simple.params[:_rucaptcha] = 'abcd'
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 553994d..75c1ef6 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -6,9 +6,7 @@ $LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 require 'rucaptcha'
 
 tmp_path = File.join(File.dirname(__FILE__), '../tmp')
-if !File.exists?(tmp_path)
-  Dir.mkdir(tmp_path)
-end
+Dir.mkdir(tmp_path) unless File.exist?(tmp_path)
 
 module Rails
   class << self
@@ -19,7 +17,7 @@ module Rails
 end
 
 RuCaptcha.configure do
-  self.len = 2
+  self.len       = 2
   self.font_size = 48
-  self.implode = 0.111
+  self.implode   = 0.111
 end