diff --git a/src/main/java/org/elasticsearch/shield/authc/ldap/LdapGroupToRoleMapper.java b/src/main/java/org/elasticsearch/shield/authc/ldap/LdapGroupToRoleMapper.java
index 0549b1d0d12..e74f8f052ba 100644
--- a/src/main/java/org/elasticsearch/shield/authc/ldap/LdapGroupToRoleMapper.java
+++ b/src/main/java/org/elasticsearch/shield/authc/ldap/LdapGroupToRoleMapper.java
@@ -33,7 +33,7 @@ import java.util.*;
  */
 public class LdapGroupToRoleMapper extends AbstractComponent {
 
-    public static final String DEFAULT_FILE_NAME = "role_mapping";
+    public static final String DEFAULT_FILE_NAME = "role_mapping.yml";
     public static final String ROLE_MAPPING_FILE_SETTING = "files.role_mapping";
     public static final String USE_UNMAPPED_GROUPS_AS_ROLES_SETTING = "unmapped_groups_as_roles";