diff --git a/Synology-RT1900ac-and-RT2600ac-install-guide.md b/Synology-RT1900ac-and-RT2600ac-install-guide.md
index 509fded..c5eadc0 100644
--- a/Synology-RT1900ac-and-RT2600ac-install-guide.md
+++ b/Synology-RT1900ac-and-RT2600ac-install-guide.md
@@ -62,4 +62,13 @@ $ vi /etc/crontab
 :wq
 ```
 
-HTH
\ No newline at end of file
+HTH
+
+## CA Cert Configuration
+My router's firmware, SRM version 1.2.5-8227 Update 2, requires the following additional web server configuration lines to make the above work. I added the lines to `/etc/httpd/conf/extra/httpd-ssl.conf-cipher`.
+```
+SSLCACertificatePath "/usr/syno/etc/ssl/ssl.crt"
+SSLCACertificateFile "/usr/syno/etc/ssl/ssl.crt/ca.crt"
+```
+
+Reload the web server using the post-hook command above after adding the lines.
\ No newline at end of file