diff --git a/src/main/resources/mybatis/system/SysDeptMapper.xml b/src/main/resources/mybatis/system/SysDeptMapper.xml
index 683b97a..8a3db34 100644
--- a/src/main/resources/mybatis/system/SysDeptMapper.xml
+++ b/src/main/resources/mybatis/system/SysDeptMapper.xml
@@ -77,7 +77,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 	</select>
 	
 	<select id="selectNormalChildrenDeptById" parameterType="Long" resultType="int">
-		select count(*) from sys_dept where status = 0 and del_flag = '0' and FIND_IN_SET(#{deptId}, ancestors)
+		select count(*) from sys_dept where status = 0 and del_flag = '0' and FIND_IN_SET(#{deptId}, ancestors) <![CDATA[ <> ]]> 0
 	</select>
 	
 	<select id="checkDeptNameUnique" resultMap="SysDeptResult">