diff --git a/spec/autolink_spec.cr b/spec/autolink_spec.cr
index 5f97191..f9714a3 100644
--- a/spec/autolink_spec.cr
+++ b/spec/autolink_spec.cr
@@ -1,5 +1,6 @@
 require "./spec_helper"
 require "html"
+require "markdown"
 
 describe Autolink do
   it "auto link URLs" do
@@ -77,7 +78,7 @@ describe Autolink do
     auto_link("<p>#{url}</p>").should eq "<p>#{generate_result(url)}</p>"
   end
 
-  it "already linked" do
+  it "ignores already linked" do
     contents = [
       "<a href=\"https://github.com\">https://github.com</a>",
       "Welcome to my new blog at <a href=\"http://www.myblog.com/\" class=\"menu\" target=\"_blank\">http://www.myblog.com/</a>. Please e-mail me at <a href=\"mailto:me@email.com\" class=\"menu\" target=\"_blank\">me@email.com</a>.",
@@ -99,4 +100,18 @@ describe Autolink do
     link = HTML.escape(%q(<a href="example">http://example.com</a>))
     auto_link(link).should eq %q(&lt;a href&#61;&quot;example&quot;&gt;<a href="http://example.com">http://example.com</a>&lt;/a&gt;)
   end
+
+  it "plays well with stdlib markdown" do
+    content = <<-EOF
+      auto_link("My blog: http://www.myblog.com")
+      My blog: <a href="http://www.myblog.com">http://www.myblog.com</a>
+      EOF
+
+    expected = <<-EOF
+      <p>auto_link("My blog: <a href="http://www.myblog.com">http://www.myblog.com</a>")
+      My blog: &lt;a href="http://www.myblog.com">http://www.myblog.com&lt;/a></p>
+      EOF
+
+    auto_link(Markdown.to_html(content)).should eq expected
+  end
 end
diff --git a/src/autolink.cr b/src/autolink.cr
index 31d58f3..6a5bb9f 100644
--- a/src/autolink.cr
+++ b/src/autolink.cr
@@ -6,7 +6,7 @@ module Autolink
               ((.+?(?=&lt;)) | [^\s<\"]+)
             }ix
 
-  AUTO_LINK_CRE = [/<[^>]+$/, /^[^>]*>/, /<a\b.*?>/i, /<\/a>/i]
+  AUTO_LINK_CRE = [/((<[^>]+$)|((&lt;[^>]+$)))/, /^[^>]*>/, /<a\b.*?>/i, /<\/a>/i]
 
   BRACKETS = {"]" => "[", ")" => "(", "}" => "{"}