diff --git a/library/think/Model.php b/library/think/Model.php
index fa6ed492..f1c91582 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -326,6 +326,7 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                     $value  = date($format, $_SERVER['REQUEST_TIME']);
                     break;
                 case 'timestamp':
+                case 'int':
                     $value = $_SERVER['REQUEST_TIME'];
                     break;
             }
diff --git a/library/think/db/Builder.php b/library/think/db/Builder.php
index 77175c82..a18332a2 100644
--- a/library/think/db/Builder.php
+++ b/library/think/db/Builder.php
@@ -297,7 +297,7 @@ abstract class Builder
             }
         }
         $bindType = isset($binds[$field]) ? $binds[$field] : PDO::PARAM_STR;
-        if (is_scalar($value) && array_key_exists($field, $binds) && !in_array($exp, ['IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN']) && strpos($exp, 'TIME') === false) {
+        if (is_scalar($value) && array_key_exists($field, $binds) && !in_array($exp, ['NOT NULL', 'NULL', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN']) && strpos($exp, 'TIME') === false) {
             if (strpos($value, ':') !== 0 || !$this->query->isBind(substr($value, 1))) {
                 $bindName = $bindName ?: 'where_' . $field;
                 $this->query->bind($bindName, $value, $bindType);