diff --git a/lilac2/l10n/en/mail.ftl b/lilac2/l10n/en/mail.ftl
index 0678cfe..7dae8f2 100644
--- a/lilac2/l10n/en/mail.ftl
+++ b/lilac2/l10n/en/mail.ftl
@@ -49,7 +49,7 @@ packaging-error-aur-subject = Error retrieving AUR package
 packaging-error-aur = Failed to retrieve AUR package!
 packaging-error-timeout-subject = Timeout when packaging %s
 packaging-error-unknown-subject = Unknown error when packaging %s
-packaging-error-unknown = An unknown error happened!
+packaging-error-unknown = An unknown error happened! Traceback:
 packaging-log = Packaging log:
 
 lilac-yaml-loadding-error = Failed to load lilac.yaml for %s
diff --git a/lilac2/l10n/zh_CN/mail.ftl b/lilac2/l10n/zh_CN/mail.ftl
index ea8b20e..eada758 100644
--- a/lilac2/l10n/zh_CN/mail.ftl
+++ b/lilac2/l10n/zh_CN/mail.ftl
@@ -26,18 +26,19 @@ unsupported-maintainer-info = 不支持的格式：{ $info }
 maintainers-error-subject = { $pkg } 的 maintainers 信息有误
 maintainers-error-body = 以下 maintainers 信息有误，请修正。
 
+-traceback-follows = 调用栈如下：
 packaging-error-subprocess-subject = 在打包软件包 %s 时发生错误
 packaging-error-subprocess =
     命令执行失败！
     
     命令 { $cmd } 返回了错误号 { $returncode }。
 packaging-error-subprocess-output = 命令的输出如下：
-packaging-error-traceback = 调用栈如下：
+packaging-error-traceback = { -traceback-follows }
 packaging-error-aur-subject = 在获取AUR包 %s 时发生错误
 packaging-error-aur = 获取AUR包失败！
 packaging-error-timeout-subject = 打包软件包 %s 超时
 packaging-error-unknown-subject = 在打包软件包 %s 时发生未知错误
-packaging-error-unknown = 发生未知错误！
+packaging-error-unknown = 发生未知错误！{ -traceback-follows }
 packaging-log = 打包日志：
 
 lilac-yaml-loadding-error = 为软件包 %s 载入 lilac.yaml 时失败
diff --git a/lilac2/repo.py b/lilac2/repo.py
index 6cf2e2e..351035f 100644
--- a/lilac2/repo.py
+++ b/lilac2/repo.py
@@ -295,7 +295,7 @@ def send_error_report(
         subject_real = subject or l10n.format_value('packaging-error-timeout-subject')
       else:
         subject_real = subject or l10n.format_value('packaging-error-unknown-subject')
-        msg1 = l10n.format_value('packaging-error-unknown') + l10n.format_value('packaging-error-traceback')
+        msg1 = l10n.format_value('packaging-error-unknown')
         msgs.append(msg1 + '\n\n' + tb)
     else:
       if subject is None: