diff --git a/docs/firststeps-rp.md b/docs/firststeps-rp.md
index 9a30adc43..85cc4cc1d 100644
--- a/docs/firststeps-rp.md
+++ b/docs/firststeps-rp.md
@@ -61,7 +61,7 @@ Let's Encrypt will follow our rewrite, certificate requests will work fine.
   ServerAlias autodiscover.*
 
   # You should proxy to a plain HTTP session to offload SSL processing
-  ProxyPass /Microsoft-Server-ActiveSync http://127.0.0.1:8080/Microsoft-Server-ActiveSync connectiontimeout=400
+  ProxyPass /Microsoft-Server-ActiveSync http://127.0.0.1:8080/Microsoft-Server-ActiveSync connectiontimeout=4000
   ProxyPassReverse /Microsoft-Server-ActiveSync http://127.0.0.1:8080/Microsoft-Server-ActiveSync
   ProxyPass / http://127.0.0.1:8080/
   ProxyPassReverse / http://127.0.0.1:8080/