diff --git a/ldapcherry/backend/backendLdap.py b/ldapcherry/backend/backendLdap.py
index b7e411f..19575a9 100644
--- a/ldapcherry/backend/backendLdap.py
+++ b/ldapcherry/backend/backendLdap.py
@@ -64,6 +64,9 @@
     def del_user(self, username):
         pass
 
+    def search(self, search_string):
+        pass
+
     def get_user(self, username, attrs=True):
         if attrs:
             a = self.attrlist