diff --git a/lib/theme_bandit/parser/css.rb b/lib/theme_bandit/parser/css.rb
index 81208ce..ce135db 100644
--- a/lib/theme_bandit/parser/css.rb
+++ b/lib/theme_bandit/parser/css.rb
@@ -10,7 +10,7 @@ def get_css_files
 
     def link_tags
       document.css('link').select do |tag|
-        tag.attribute('rel').value == 'stylesheet'
+        tag.attribute('rel') && tag.attribute('rel').value == 'stylesheet'
       end
     end
 
diff --git a/test/fixtures/index.html b/test/fixtures/index.html
index 9a1a8bf..467a08e 100644
--- a/test/fixtures/index.html
+++ b/test/fixtures/index.html
@@ -7,6 +7,7 @@
 <link rel='stylesheet' href='/css/style.css'></link>
 <link rel='stylesheet' href='/css/style_with_import.css'></link>
 <link rel='foo' href='bar'></link>
+<link itemprop="url" href="http://www.domain.com" style="display: none;"/>
 <script type='text/javascripts' src='/js/script.js'></script>
 <script type='text/javascripts' src='/js/script_2.js'></script>
 </head>
diff --git a/test/support/common.rb b/test/support/common.rb
index 93ddacc..b8f765a 100644
--- a/test/support/common.rb
+++ b/test/support/common.rb
@@ -1,5 +1,7 @@
 def load_html_fixture
-  @fixture ||= File.read(File.open("#{Dir.pwd}/test/fixtures/index.html", 'r'))
+  # @fixture ||= File.read(File.open("#{Dir.pwd}/test/fixtures/index.html", 'r'))
+
+  @fixture ||= File.read(File.expand_path("../../fixtures/index.html", __FILE__))
 end
 
 def load_css_fixture
diff --git a/test/test_css_parser.rb b/test/test_css_parser.rb
new file mode 100644
index 0000000..9730a66
--- /dev/null
+++ b/test/test_css_parser.rb
@@ -0,0 +1,24 @@
+require_relative 'helper'
+
+  describe ThemeBandit::CSSParser do
+
+    before do
+      #parse index.html fixture with Nokogiri
+      document = Nokogiri::HTML(load_html_fixture)
+
+      #Create a struct and include the CSSParser module
+      CSSParser = Struct.new(:document) do
+        include ThemeBandit::CSSParser
+      end
+
+      #create new instance of CSSParser and set the document instance variable to the parsed fixture
+      @css_parser = CSSParser.new(document)
+    end
+
+    it 'parses only <link> tags with rel="stylesheet"' do
+      assert_equal(@css_parser.link_tags.map{|tag| tag.to_s}, [
+          "<link rel=\"stylesheet\" href=\"/css/style.css\">",
+          "<link rel=\"stylesheet\" href=\"/css/style_with_import.css\">"
+      ])
+    end
+  end
\ No newline at end of file
diff --git a/test/test_document_writer.rb b/test/test_document_writer.rb
index 40f9f75..6646376 100644
--- a/test/test_document_writer.rb
+++ b/test/test_document_writer.rb
@@ -1,4 +1,4 @@
-require 'helper'
+require_relative 'helper'
 
 describe ThemeBandit::DocumentWriter do
 
diff --git a/test/test_rack_generator.rb b/test/test_rack_generator.rb
index 3f5dc46..bfd7b40 100644
--- a/test/test_rack_generator.rb
+++ b/test/test_rack_generator.rb
@@ -1,4 +1,4 @@
-require 'helper'
+require_relative 'helper'
 
 describe ThemeBandit::RackGenerator do