Cisco static NAT not working on LAN side

I have a web server in my private network that has the ip address 192.168.1.134.

I need to allow users to access this web server from both the internet and the private network. The public ip address is 85.185.236.12. I setup static nat (192.168.1.136 => 85.185.236.12) on the wan interface. Now, when we access it from the internet everything works perfectly, but when we try to access it from the LAN we can't access the webserver. I use cisco 1841 router and i think nat not working when i try to access it. How can we access the web server from the LAN? Thanks.