diff --git a/src/Auth/Db.php b/src/Auth/Db.php
index a439385..edd280b 100644
--- a/src/Auth/Db.php
+++ b/src/Auth/Db.php
@@ -86,13 +86,11 @@ class Db extends Backend {
   public static function get_user($username) {
     self :: connect();
     try {
-      $query = self :: $class :: $fpdo -> from(self :: $users_table)
-        -> select(null)
-        -> select(self :: $exposed_fields)
-        -> where(self :: $username_field, $username);
-
-      $result = $query -> execute();
-      $info = $result -> fetch();
+      $info = self :: $class :: get_one(
+        self :: $users_table,
+        [self :: $username_field => $username],
+        self :: $exposed_fields
+      );
       if ($info === false)
         return null;
       return new User($username, '\\EesyPHP\\Auth\\Db', $info);
@@ -112,16 +110,14 @@ class Db extends Backend {
   public static function check_password($user, $password) {
     self :: connect();
     try {
-      $query = self :: $class :: $fpdo -> from(self :: $users_table)
-        -> select(null)
-        -> select(self :: $password_field)
-        -> where(self :: $username_field, $user->username);
-
-      $result = $query -> execute();
-      $info = $result -> fetch();
+      $info = self :: $class :: get_one(
+        self :: $users_table,
+        [self :: $username_field => $user->username],
+        [self :: $password_field]
+      );
       if ($info === false)
         return false;
-      return password_verify($password, $info['password']);
+      return password_verify($password, $info[self :: $password_field]);
     }
     catch (Exception $e) {
       Log :: error("Error retrieving user %s password from database: %s", $user, $e->getMessage());