diff --git a/modules/comment/tpl/comment_list.html b/modules/comment/tpl/comment_list.html
index 4d9021e2e..e6ec898ae 100644
--- a/modules/comment/tpl/comment_list.html
+++ b/modules/comment/tpl/comment_list.html
@@ -120,7 +120,7 @@ xe.lang.msg_empty_search_keyword = '{$lang->msg_empty_search_keyword}';
 		<option value="{$key}" <!--@if($search_target==$key)-->selected="selected"<!--@end-->>{$val}</option>
 		<!--@end-->
 	</select>
-	<input type="search" required name="search_keyword" value="{htmlspecialchars($search_keyword)}" />
+	<input type="search" name="search_keyword" value="{htmlspecialchars($search_keyword)}" />
 	<button type="submit" class="x_btn x_btn-inverse">{$lang->cmd_search}</button>
 	<button class="x_btn" type="button" onclick="document.location.href='{getUrl('','module',$module,'act',$act)}'">{$lang->cmd_cancel}</button>
 </form>
diff --git a/modules/comment/tpl/js/comment_admin.js b/modules/comment/tpl/js/comment_admin.js
index d92569afb..18ed18b14 100644
--- a/modules/comment/tpl/js/comment_admin.js
+++ b/modules/comment/tpl/js/comment_admin.js
@@ -83,9 +83,11 @@ function checkSearch(form)
 		alert(xe.lang.msg_empty_search_target);
 		return false;
 	}
+	/*
 	if(form.search_keyword.value == '')
 	{
 		alert(xe.lang.msg_empty_search_keyword);
 		return false;
 	}
+	*/
 }
diff --git a/modules/document/tpl/document_list.html b/modules/document/tpl/document_list.html
index 3842e9cb6..6d7ab5418 100644
--- a/modules/document/tpl/document_list.html
+++ b/modules/document/tpl/document_list.html
@@ -115,7 +115,7 @@ xe.lang.msg_empty_search_keyword = '{$lang->msg_empty_search_keyword}';
 		<option value="{$key}" <!--@if($search_target==$key)-->selected="selected"<!--@end-->>{$val}</option>
 		<!--@end-->
 	</select>
-	<input type="search" name="search_keyword" value="{htmlspecialchars($search_keyword)}" title="{$lang->cmd_search}" required />
+	<input type="search" name="search_keyword" value="{htmlspecialchars($search_keyword)}" title="{$lang->cmd_search}" />
 	<button type="submit" class="x_btn x_btn-inverse">{$lang->cmd_search}</button>
 	<button class="x_btn" type="button">{$lang->cmd_cancel}</button>
 </form>
diff --git a/modules/file/tpl/file_list.html b/modules/file/tpl/file_list.html
index efa72edda..c539afe11 100644
--- a/modules/file/tpl/file_list.html
+++ b/modules/file/tpl/file_list.html
@@ -147,7 +147,7 @@ xe.lang.msg_empty_search_keyword = '{$lang->msg_empty_search_keyword}';
 		<option value="{$key}" <!--@if($search_target==$key)-->selected="selected"<!--@end-->>{$val}</option>
 		<!--@end-->
 	</select>
-	<input type="search" required name="search_keyword" value="{htmlspecialchars($search_keyword)}" />
+	<input type="search" name="search_keyword" value="{htmlspecialchars($search_keyword)}" />
 	<button type="submit" class="x_btn x_btn-inverse">{$lang->cmd_search}</button>
 	<a href="{getUrl('','module',$module,'act',$act)}" class="x_btn">{$lang->cmd_cancel}</a>
 </form>
diff --git a/modules/file/tpl/js/file_admin.js b/modules/file/tpl/js/file_admin.js
index 54c5eba91..4fe392b97 100644
--- a/modules/file/tpl/js/file_admin.js
+++ b/modules/file/tpl/js/file_admin.js
@@ -51,9 +51,11 @@ function checkSearch(form)
 		alert(xe.lang.msg_empty_search_target);
 		return false;
 	}
+	/*
 	if(form.search_keyword.value == '')
 	{
 		alert(xe.lang.msg_empty_search_keyword);
 		return false;
 	}
+	*/
 }
diff --git a/modules/member/tpl/member_list.html b/modules/member/tpl/member_list.html
index f4671934e..bf76a2168 100644
--- a/modules/member/tpl/member_list.html
+++ b/modules/member/tpl/member_list.html
@@ -123,7 +123,7 @@
 		{@$lang->search_target_list = array_merge($lang->search_target_list, $usedIdentifiers)}
 		<option value="{$key}" loop="$lang->search_target_list=>$key,$val" selected="selected"|cond="$search_target==$key">{$val}</option>
 	</select>
-	<input type="search" name="search_keyword" value="{htmlspecialchars($search_keyword)}" required style="width:140px">
+	<input type="search" name="search_keyword" value="{htmlspecialchars($search_keyword)}" style="width:140px">
 	<button class="x_btn x_btn-inverse" type="submit">{$lang->cmd_search}</button>
 	<a class="x_btn" href="{getUrl('', 'module', 'admin', 'act', 'dispMemberAdminList', 'page', $page)}">{$lang->cmd_cancel}</a>
 </form>
diff --git a/modules/module/tpl/multilingual_v17_list.html b/modules/module/tpl/multilingual_v17_list.html
index 7ebf1db01..7f46f2c4b 100644
--- a/modules/module/tpl/multilingual_v17_list.html
+++ b/modules/module/tpl/multilingual_v17_list.html
@@ -59,7 +59,7 @@
 		<select name="lang_code">
 			<option loop="$lang_supported => $code, $lname" value="{$code}" selected="selected"|cond="$code == $lang_code">{$lname}</option>
 		</select>
-		<input type="search" name="search_keyword" required title="Search" value="<!--@if($name)-->{htmlspecialchars($lang_code_list[1]->value)}<!--@else-->{htmlspecialchars($search_keyword)}<!--@end-->">
+		<input type="search" name="search_keyword" title="Search" value="<!--@if($name)-->{htmlspecialchars($lang_code_list[1]->value)}<!--@else-->{htmlspecialchars($search_keyword)}<!--@end-->">
 		<button class="x_btn x_btn-inverse" type="submit">{$lang->cmd_search}</button>
 		<button cond="$search_keyword || $name" id="search_cancel" class="x_btn" type="button">{$lang->cmd_cancel}</button>
 	</form>
diff --git a/modules/poll/tpl/poll_list.html b/modules/poll/tpl/poll_list.html
index fb0997da3..f141dd2ed 100644
--- a/modules/poll/tpl/poll_list.html
+++ b/modules/poll/tpl/poll_list.html
@@ -100,7 +100,7 @@ xe.lang.confirm_poll_delete = '{$lang->confirm_poll_delete}';
 	<select name="search_target" title="{$lang->search_target}" style="margin-right:4px">
 		<option loop="$lang->search_poll_target_list => $key, $val" value="{$key}" selected="selected"|cond="$search_target==$key">{$val}</option>
 	</select>
-	<input type="search" name="search_keyword" required value="{htmlspecialchars($search_keyword)}" />
+	<input type="search" name="search_keyword" value="{htmlspecialchars($search_keyword)}" />
 	<button class="x_btn x_btn-inverse" type="submit">{$lang->cmd_search}</button>
 	<a class="x_btn" href="{getUrl('','module',$module,'act',$act)}">{$lang->cmd_cancel}</a>
 </form>
diff --git a/modules/trackback/tpl/trackback_list.html b/modules/trackback/tpl/trackback_list.html
index d0edcc47c..dc829dbe1 100644
--- a/modules/trackback/tpl/trackback_list.html
+++ b/modules/trackback/tpl/trackback_list.html
@@ -90,7 +90,7 @@ xe.lang.msg_empty_search_keyword = '{$lang->msg_empty_search_keyword}';
 		<option value="{$key}" <!--@if($search_target==$key)-->selected="selected"<!--@end-->>{$val}</option>
 		<!--@end-->
 	</select>
-	<input type="search" name="search_keyword" required value="{htmlspecialchars($search_keyword)}" />
+	<input type="search" name="search_keyword" value="{htmlspecialchars($search_keyword)}" />
 	<button type="submit" class="x_btn x_btn-inverse">{$lang->cmd_search}</button>
 	<a class="x_btn" href="{getUrl('','module',$module,'act',$act)}">{$lang->cmd_cancel}</a>
 </form>