diff --git a/Getting-started.md b/Getting-started.md
index 6b58a31..9fe93cf 100644
--- a/Getting-started.md
+++ b/Getting-started.md
@@ -61,6 +61,8 @@ Players can setup their groups with a [group](signs#group) sign in one of the ma
 
 The portal does not need any link to the dungeon as this is defined by the signs; just create it with _/dxl portal_ and DungeonsXL will handle the rest.
 
+If you'd like to, you can specify other materials than the portal block through the command, for example through _/dxl portal WATER_. Portal blocks are recommended because they obviously are the block that is intended to be a portal. They are explicitly supported, while other materials are not handled specifically and might not work as intended or break upon new Minecraft versions if there physics change.
+
 A correct sign / portal setup should look similar to this:
 
 ![Enter with a portal](http://feuerstern.bplaced.net/ressourcen/DXLSigns/EnterPortal.png)