diff --git a/modules/board/tpl/filter/insert.xml b/modules/board/tpl/filter/insert.xml
index d9c4a91f5..877a69c0a 100644
--- a/modules/board/tpl/filter/insert.xml
+++ b/modules/board/tpl/filter/insert.xml
@@ -1,6 +1,6 @@
 <filter name="insert" module="board" act="procBoardInsertDocument">
   <form>
-    <node target="nick_name" required="true" />
+    <node target="nick_name" required="true" maxlength="20"/>
     <node target="password" required="true" />
     <node target="email_address" maxlength="250" />
     <node target="homepage" maxlength="250"/>
diff --git a/modules/board/tpl/filter/insert_comment.xml b/modules/board/tpl/filter/insert_comment.xml
index 04b09d5e5..4c78673ef 100644
--- a/modules/board/tpl/filter/insert_comment.xml
+++ b/modules/board/tpl/filter/insert_comment.xml
@@ -1,7 +1,7 @@
 <filter name="insert_comment" module="board" act="procBoardInsertComment">
   <form>
     <node target="document_srl" required="true" />
-    <node target="nick_name" required="true" />
+    <node target="nick_name" required="true" maxlength="20"/>
     <node target="password" required="true" />
     <node target="email_address" maxlength="250" />
     <node target="homepage" maxlength="250"/>