diff --git a/lib/ee/gitlab/ldap/adapter.rb b/lib/ee/gitlab/ldap/adapter.rb
index c78197dc1ec08f1264038fbc594641b70d5519a3..c6c20efd42539557cad762b6eee48567877999da 100644
--- a/lib/ee/gitlab/ldap/adapter.rb
+++ b/lib/ee/gitlab/ldap/adapter.rb
@@ -22,7 +22,7 @@ def groups(cn = "*", size = nil)
           options.merge!(size: size) if size
 
           ldap_search(options).map do |entry|
-            Group.new(entry, self)
+            LDAP::Group.new(entry, self)
           end
         end