diff --git a/lib/formatter.js b/lib/formatter.js
index 17bf449..ef86500 100644
--- a/lib/formatter.js
+++ b/lib/formatter.js
@@ -22,7 +22,9 @@ function formatHeading(elem, fn, options) {
 }
 
 function formatAnchor(elem, fn, options) {
-	return elem.attribs.href.replace(/^mailto\:/, '');
+	if(elem.attribs.hasOwnProperty('href'))
+		return elem.attribs.href.replace(/^mailto\:/, '');
+	else	return '';
 };
 
 function formatHorizontalLine(elem, fn, options) {
@@ -135,4 +137,4 @@ exports.table = formatTable;
 exports.orderedList = formatOrderedList;
 exports.unorderedList = formatUnorderedList;
 exports.listItem = formatListItem;
-exports.horizontalLine = formatHorizontalLine;
\ No newline at end of file
+exports.horizontalLine = formatHorizontalLine;