diff --git a/src/js/easymde.js b/src/js/easymde.js
index fd36247..5216963 100644
--- a/src/js/easymde.js
+++ b/src/js/easymde.js
@@ -1274,7 +1274,7 @@ function _toggleLink(editor, type, startEnd, url) {
     var end = text.slice(startPoint.ch);
 
     if (type == 'link') {
-        start = start.replace(/(.*(?<!!))\[/, '$1');
+        start = start.replace(/(.*)[^!]\[/, '$1');
     } else if (type == 'image') {
         start = start.replace(/(.*)!\[$/, '$1');
     }