diff --git a/app/validate/InvoiceHeadValidate.php b/app/validate/InvoiceHeadValidate.php
index 3c85f81..d7132d1 100644
--- a/app/validate/InvoiceHeadValidate.php
+++ b/app/validate/InvoiceHeadValidate.php
@@ -14,7 +14,7 @@ class InvoiceHeadValidate extends Validate
     protected $rule = [
         'type|抬头类型' => 'require|in:0,1',
         'title|抬头名称' => 'require',
-        'tax_number|税号' => 'require|alphaNum|length：18',
+        'tax_number|税号' => 'require|alphaNum|length:18',
         'address|地址' => 'require',
         'telephone|电话' => 'require|alphaDash',
         'bank_name|开户行' => 'require',