diff --git a/_posts/2019-12-17-ttrss-rsshub.markdown b/_posts/2019-12-17-ttrss-rsshub.markdown
index 02842a9..e896a55 100644
--- a/_posts/2019-12-17-ttrss-rsshub.markdown
+++ b/_posts/2019-12-17-ttrss-rsshub.markdown
@@ -170,6 +170,7 @@ Killed
 cd /var
 dd if=/dev/zero of=swapfile bs=1024 count=524288 #512M, 按需调整
 mkswap /var/swapfile
+chmod 0600 /var/swapfile
 /sbin/swapon swapfile
 ```
 在 `/etc/fstab`中增加如下一行