diff --git a/src/Html2Text.php b/src/Html2Text.php
index 6e0f9e5..dd2154e 100644
--- a/src/Html2Text.php
+++ b/src/Html2Text.php
@@ -145,7 +145,7 @@ class Html2Text
         '/<(strong)( [^>]*)?>(.*?)<\/strong>/i',                 // <strong>
         '/<(del)( [^>]*)?>(.*?)<\/del>/i',                       // <del>
         '/<(th)( [^>]*)?>(.*?)<\/th>/i',                         // <th> and </th>
-        '/<(a) [^>]*href=("|\')([^"\']+)\2([^>]*)>(.*?)<\/a>/i'  // <a href="">
+        '/<(a) [^>]*href=(?|("|\')([^"\']+)\2|()([^\s"\'>]+))([^>]*)>(.*?)<\/a>/i' // <a href=""> and <a href=...>
     );
 
     /**
diff --git a/test/LinkTest.php b/test/LinkTest.php
index 51ab635..5558d36 100644
--- a/test/LinkTest.php
+++ b/test/LinkTest.php
@@ -181,4 +181,14 @@ public function testMailtoWithEntity()
 
         $this->assertEquals($expected, $html2text->getText());
     }
+
+    public function testUnquotedHref()
+    {
+        $html = '<a href=http://example.com/page?id=1>Link text</a> and <a class=x href=example.com target=_blank>other</a>';
+        $expected = 'Link text [http://example.com/page?id=1] and other [/example.com]';
+
+        $html2text = new Html2Text($html, array('do_links' => 'inline'));
+
+        $this->assertEquals($expected, $html2text->getText());
+    }
 }