diff --git a/IRaCIS.Core.Application/Service/Document/EmailSendService.cs b/IRaCIS.Core.Application/Service/Document/EmailSendService.cs
index c630d5b6b..d38d3726a 100644
--- a/IRaCIS.Core.Application/Service/Document/EmailSendService.cs
+++ b/IRaCIS.Core.Application/Service/Document/EmailSendService.cs
@@ -421,7 +421,7 @@ namespace IRaCIS.Core.Application.Service
                     sendEmailConfig.HtmlBodyStr = htmlBodyStr.Replace(EmailNamePlaceholder, string.Join(isEn_us ? ", " : "、", toUserList.Select(t => t.FullName).ToList()));
                 }
 
-                if (toUserList.Count() == 0)
+                if (toUserList.Count == 0)
                 {
                     //---没有收件人，无法发送邮件
                     throw new BusinessValidationFailedException(_localizer["TrialEmailN_NoRecipient"]);