diff --git a/install/elementsynapse-install.sh b/install/elementsynapse-install.sh
index c5f95f6f0..2d4523589 100644
--- a/install/elementsynapse-install.sh
+++ b/install/elementsynapse-install.sh
@@ -21,6 +21,8 @@ msg_ok "Installed Dependencies"
 
 NODE_VERSION="22" NODE_MODULE="yarn" setup_nodejs
 
+echo "${TAB3}It is important to choose the name for your server before you install Synapse, because it cannot be changed later."
+echo "${TAB3}The server name determines the “domain” part of user-ids for users on your server: these will all be of the format @user:my.domain.name. It also determines how other matrix servers will reach yours for federation."
 read -p "${TAB3}Please enter the name for your server: " servername
 
 msg_info "Installing Element Synapse"