diff --git a/lib/redmine/syntax_highlighting.rb b/lib/redmine/syntax_highlighting.rb
index 3bb2bd122..d8ad4267f 100644
--- a/lib/redmine/syntax_highlighting.rb
+++ b/lib/redmine/syntax_highlighting.rb
@@ -46,7 +46,7 @@ module Redmine
         # Highlights +text+ using +language+ syntax
         # Should not return outer pre tag
         def highlight_by_language(text, language)
-          ::CodeRay.scan(text, language).html(:line_numbers => :inline, :line_number_anchors => false, :wrap => :span)
+          ::CodeRay.scan(text, language).html(:wrap => :span)
         end
       end
     end
diff --git a/test/unit/helpers/application_helper_test.rb b/test/unit/helpers/application_helper_test.rb
index 1885f4da3..b3757b092 100644
--- a/test/unit/helpers/application_helper_test.rb
+++ b/test/unit/helpers/application_helper_test.rb
@@ -720,7 +720,7 @@ EXPECTED
 RAW
 
     expected = <<-EXPECTED
-<pre><code class="ruby syntaxhl"><span class=\"CodeRay\"><span class="line-numbers">1</span><span class="comment"># Some ruby code here</span></span>
+<pre><code class="ruby syntaxhl"><span class=\"CodeRay\"><span class="comment"># Some ruby code here</span></span>
 </code></pre>
 EXPECTED