diff --git a/mobile/skin/member/kcpcert/register_form_update.tail.skin.php b/mobile/skin/member/kcpcert/register_form_update.tail.skin.php
index 922a1a2f6..d9e9777d3 100644
--- a/mobile/skin/member/kcpcert/register_form_update.tail.skin.php
+++ b/mobile/skin/member/kcpcert/register_form_update.tail.skin.php
@@ -25,4 +25,6 @@ if($_POST['kcpcert_no']) {
     sql_query($sql);
 }
 /* =========================================================================== */
+
+set_session('ss_adult_check', '');
 ?>
diff --git a/plugin/kcp/kcpcert_config.php b/plugin/kcp/kcpcert_config.php
index c97fb79e1..dda7cb5df 100644
--- a/plugin/kcp/kcpcert_config.php
+++ b/plugin/kcp/kcpcert_config.php
@@ -58,4 +58,8 @@ function f_get_parm_int( $val )
     return  $ret_val;
 }
 /* ============================================================================== */
+
+// ss_adult_check clear
+if(get_session('ss_adult_check'))
+    set_session('ss_adult_check', '');
 ?>
\ No newline at end of file
diff --git a/skin/member/kcpcert/register_form_update.tail.skin.php b/skin/member/kcpcert/register_form_update.tail.skin.php
index 922a1a2f6..d9e9777d3 100644
--- a/skin/member/kcpcert/register_form_update.tail.skin.php
+++ b/skin/member/kcpcert/register_form_update.tail.skin.php
@@ -25,4 +25,6 @@ if($_POST['kcpcert_no']) {
     sql_query($sql);
 }
 /* =========================================================================== */
+
+set_session('ss_adult_check', '');
 ?>