diff --git a/htdocs/lib/Database/DBStudyActivity.php b/htdocs/lib/Database/DBStudyActivity.php
index 51c645e..1dba2ff 100644
--- a/htdocs/lib/Database/DBStudyActivity.php
+++ b/htdocs/lib/Database/DBStudyActivity.php
@@ -120,9 +120,9 @@ class DBStudyActivity extends Database {
         $query->bindParam(":uid", $userId);
         $query->bindParam(":thid", $themeId);
         $query->bindParam(":delay", $delay);
-        $query->bindParam(":timeforce", $timeForce);
-        $query->bindParam(":lstyle_force", $learnStyle_force);
-        $query->bindParam(":enable_virtual", $enable_virtual);
+        $query->bindParam(":timeforce", $timeForce, \PDO::PARAM_BOOL);
+        $query->bindParam(":lstyle_force", $learnStyle_force, \PDO::PARAM_BOOL);
+        $query->bindParam(":enable_virtual", $enable_virtual, \PDO::PARAM_BOOL);
         $query->execute();
 
         // 取得剛剛加入的ID
diff --git a/htdocs/lib/Database/DBUser.php b/htdocs/lib/Database/DBUser.php
index 497cc98..9c1572a 100644
--- a/htdocs/lib/Database/DBUser.php
+++ b/htdocs/lib/Database/DBUser.php
@@ -134,10 +134,10 @@ class DBUser extends Database {
         $query->bindParam(":passwd", $password);
         $query->bindParam(":gid", $gId);
         $query->bindParam(":cid", $cId);
-        $query->bindParam(":enable", $enable);
+        $query->bindParam(":enable", $enable, \PDO::PARAM_BOOL);
         $query->bindParam(":lmode", $l_mode);
         $query->bindParam(":mmode", $m_mode);
-        $query->bindParam(":enpublic", $enPublic);
+        $query->bindParam(":enpublic", $enPublic, \PDO::PARAM_BOOL);
         $query->bindParam(":nickname", $nickName);
         $query->bindParam(":realname", $realName);
         $query->bindParam(":email", $email);