diff --git a/module/dept/model.php b/module/dept/model.php
index 7fd5752c90..fa432bda96 100644
--- a/module/dept/model.php
+++ b/module/dept/model.php
@@ -371,10 +371,10 @@ class deptModel extends model
     /**
      * Get users of a deparment.
      *
-     * @param  varchar $browseType inside|outside|all
+     * @param  string  $browseType inside|outside|all
      * @param  int     $deptID
      * @param  object  $pager
-     * @param  varchar $orderBy
+     * @param  string  $orderBy
      * @access public
      * @return array
      */
diff --git a/module/holiday/model.php b/module/holiday/model.php
index cfffe7ff23..2b4a05d0f3 100644
--- a/module/holiday/model.php
+++ b/module/holiday/model.php
@@ -250,8 +250,8 @@ class holidayModel extends model
     /**
      * Get diff days.
      *
-     * @param  varchar $begin
-     * @param  varchar $end
+     * @param  string  $begin
+     * @param  string  $end
      * @access public
      * @return bool
      */
diff --git a/module/program/control.php b/module/program/control.php
index 57555ca63f..85b733eaf0 100644
--- a/module/program/control.php
+++ b/module/program/control.php
@@ -29,8 +29,8 @@ class program extends control
     /**
      * Program list.
      *
-     * @param  varchar $status
-     * @param  varchar $orderBy
+     * @param  string  $status
+     * @param  string  $orderBy
      * @access public
      * @return void
      */
diff --git a/module/todo/control.php b/module/todo/control.php
index 173526d4f4..b8b41150a8 100644
--- a/module/todo/control.php
+++ b/module/todo/control.php
@@ -668,7 +668,7 @@ class todo extends control
      * AJAX: get program id.
      *
      * @param  int     $objectID
-     * @param  varchar $objectType
+     * @param  string  $objectType
      * @access public
      * @return void
      */