diff --git a/html2text.py b/html2text.py
index 6e79b43..59fc1e4 100755
--- a/html2text.py
+++ b/html2text.py
@@ -517,8 +517,9 @@ def handle_tag(self, tag, attrs, start):
         if tag == "a" and not self.ignore_links:
             if start:
                 if ('href' in attrs) and \
-                        not (self.skip_internal_links and
-                             attrs['href'].startswith('#')):
+                        (attrs['href'] is not None) and \
+                            not (self.skip_internal_links and
+                                attrs['href'].startswith('#')):
                     self.astack.append(attrs)
                     self.maybe_automatic_link = attrs['href']
                 else: