“Log4j: configuration” deve corresponder a “(renderer… .loggerFactory)?)”

recebendo erro, ao implantar meu arquivo war no tomcat:

log4j:WARN The content of element type "log4j:configuration" must match "(renderer*,throwableRenderer?,appender*,plugin*,(category|logger)*,root?,(categoryFactory|loggerFactory)?)"

Eu pesquisei e descobri que a ordenação do meu log4j.xml poderia estar errada, mas deveria estar correta.

<?xml version="1.0" encoding="UTF-8" ?>  
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">  

  <appender name="console" class="org.apache.log4j.ConsoleAppender">  
    <param name="Target" value="System.out"/>  
    <layout class="org.apache.log4j.PatternLayout">  
      <param name="ConversionPattern" value="%-5p %d %c %x - %m%n"/>  
    </layout>  
  </appender>  

  <root>  
    <priority value ="error" />  
    <appender-ref ref="console" />  
  </root>  

  <category name="org.springframework" additivity="false">  
    <priority value="info" />  
    <appender-ref ref="console" />  
  </category>  

</log4j:configuration>

Alguma sugestão?