Index: /branches/version-2_12-dev/data/class/SC_CheckError.php
===================================================================
--- /branches/version-2_12-dev/data/class/SC_CheckError.php	(revision 22796)
+++ /branches/version-2_12-dev/data/class/SC_CheckError.php	(revision 22874)
@@ -1116,7 +1116,8 @@
         $this->createParam($value);
         $targetStr     = $this->arrParam[$value[1]];
+
         $prohibitedStr = str_replace(array('|', '/'), array('\|', '\/'), $value[2]);
-
-        $pattern = '/' . join('|', $prohibitedStr) . '/i';
+        $pattern = '/' . join('\b|\b', $prohibitedStr) . '\b/i';
+
         if (preg_match_all($pattern, $targetStr, $matches = array())) {
             $this->arrErr[$value[1]] = '※ ' . $value[0] . 'は入力できません。<br />';