diff --git a/lib/activedirectory.js b/lib/activedirectory.js
index 316dd10..1460207 100755
--- a/lib/activedirectory.js
+++ b/lib/activedirectory.js
@@ -176,6 +176,10 @@ function parseDistinguishedName(dn) {
   if (! dn) return(dn);
 
   dn = dn.replace(/"/g, '\\"');
+  dn = dn.replace(/\\/g, '\\\\'); // escape \ as per RFC 4514
+  dn = dn.replace(/\*/g, '\\*'); // escape * as per RFC 4514
+  dn = dn.replace(/\(/g, '\\('); // escape ( as per RFC 4514
+  dn = dn.replace(/\)/g, '\\)'); // escape ) as per RFC 4514
   return(dn.replace('\\,', '\\\\,'));
 }