diff --git a/README.md b/README.md
index a8940e9e..6e2a4e4a 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,7 @@ The federated image sharing service Pixelfed, for YunoHost
 ![](https://camo.githubusercontent.com/c1c2e74057dcff57e103fcbb3239840802fcf752/68747470733a2f2f706978656c6665642e6e7963332e63646e2e6469676974616c6f6365616e7370616365732e636f6d2f6d656469612f53637265656e25323053686f74253230323031392d30322d30352532306174253230362e33342e3539253230504d2e706e67)
 
 ## Configuration
+[Official documentation](https://docs.pixelfed.org/master/configuration.html)
 
 ### Administrator
 
@@ -27,6 +28,11 @@ After being first registered, you need to execute the folloing command to promot
 
 and respond yes to the question ` Add admin privileges to this user?`
 
+### Pixelfed php commands and php version
+
+Pixelfed might require some command line instructions if you make manual changes to your configuration.
+By default php 7.0 is currently used when you type `php`. You need to use `php7.2 [command]` instead.
+
 ### Allow/Close registration
 
 Registrations are open by default.