diff --git a/packages/wekan-ldap/server/ldap.js b/packages/wekan-ldap/server/ldap.js
index cc266e9af..83d7d7960 100644
--- a/packages/wekan-ldap/server/ldap.js
+++ b/packages/wekan-ldap/server/ldap.js
@@ -389,7 +389,7 @@ export default class LDAP {
     filter.push(')');
 
     const searchOptions = {
-      filter: filter.join('').replace(/#{username}/g, username),
+      filter: filter.join('').replace(/#{username}/g, username).replace("\\", "\\\\"),
       scope : 'sub',
     };
 
@@ -437,7 +437,7 @@ export default class LDAP {
     filter.push(')');
 
     const searchOptions = {
-      filter: filter.join('').replace(/#{username}/g, username),
+      filter: filter.join('').replace(/#{username}/g, username).replace("\\", "\\\\"),
       scope : 'sub',
     };