diff --git a/library/think/Validate.php b/library/think/Validate.php
index 42c596cf..69384667 100644
--- a/library/think/Validate.php
+++ b/library/think/Validate.php
@@ -1194,7 +1194,7 @@ class Validate
      */
     protected function getDataValue($data, $key)
     {
-        if (is_numberic($key)) {
+        if (is_numeric($key)) {
             $value = $key;
         } elseif (strpos($key, '.')) {
             // 支持二维数组验证