diff --git a/src/js/simplemde.js b/src/js/simplemde.js
index 7d79233..fb24685 100644
--- a/src/js/simplemde.js
+++ b/src/js/simplemde.js
@@ -648,7 +648,7 @@ function _cleanBlock(cm) {
 
 	for (var line = startPoint.line; line <= endPoint.line; line++) {
 		text = cm.getLine(line);
-		text = text.replace(/^ *([# ]+|\*|\-|[> ]+|[0-9]+[.]) */, '')
+		text = text.replace(/^[ ]*([# ]+|\*|\-|[> ]+|[0-9]+(.|\)))[ ]*/, '')
 
 		cm.replaceRange(text, {
 			line: line,