diff --git a/scripts/setup.js b/scripts/setup.js
index 2fb2dd0..0fae913 100644
--- a/scripts/setup.js
+++ b/scripts/setup.js
@@ -105,7 +105,8 @@ async function validateHomeserverOrigin(serverUrlPrompt, url) {
 		const serverNameResponse = await prompt({
 			type: "input",
 			name: "server_name",
-			message: "Homeserver name"
+			message: "Homeserver name",
+			validate: serverName => !!serverName.match(/[a-z][a-z.]+[a-z]/)
 		})
 
 		console.log("What is the URL of your homeserver?")
@@ -176,7 +177,7 @@ async function validateHomeserverOrigin(serverUrlPrompt, url) {
 			message: "Client secret"
 		})
 
-		const template = getTemplateRegistration()
+		const template = getTemplateRegistration(serverNameResponse.server_name)
 		reg = {
 			...template,
 			url: bridgeOriginResponse.bridge_origin,
diff --git a/src/matrix/read-registration.js b/src/matrix/read-registration.js
index 8438387..9fb0535 100644
--- a/src/matrix/read-registration.js
+++ b/src/matrix/read-registration.js
@@ -24,8 +24,12 @@ function writeRegistration(reg) {
 	fs.writeFileSync(registrationFilePath, JSON.stringify(reg, null, 2))
 }
 
-/** @returns {import("../types").InitialAppServiceRegistrationConfig} reg */
-function getTemplateRegistration() {
+/**
+ * @param {string} serverName
+ * @returns {import("../types").InitialAppServiceRegistrationConfig} reg
+ */
+function getTemplateRegistration(serverName) {
+	const namespace_prefix = "_ooye_"
 	return {
 		id: "ooye",
 		as_token: crypto.randomBytes(32).toString("hex"),
@@ -33,21 +37,21 @@ function getTemplateRegistration() {
 		namespaces: {
 			users: [{
 				exclusive: true,
-				regex: "@_ooye_.*:cadence.moe"
+				regex: `@${namespace_prefix}.*:${serverName}`
 			}],
 			aliases: [{
 				exclusive: true,
-				regex: "#_ooye_.*:cadence.moe"
+				regex: `#${namespace_prefix}.*:${serverName}`
 			}]
 		},
 		protocols: [
 			"discord"
 		],
-		sender_localpart: "_ooye_bot",
+		sender_localpart: `${namespace_prefix}bot`,
 		rate_limited: false,
 		socket: 6693,
 		ooye: {
-			namespace_prefix: "_ooye_",
+			namespace_prefix,
 			max_file_size: 5000000,
 			content_length_workaround: false,
 			include_user_id_in_mxid: false,
diff --git a/src/web/pug/guild.pug b/src/web/pug/guild.pug
index 2130aff..960f30b 100644
--- a/src/web/pug/guild.pug
+++ b/src/web/pug/guild.pug
@@ -136,7 +136,7 @@ block body
       form.d-flex.ai-center.g8
         label.s-label.fl-grow1(for="autocreate")
           | Create new Matrix rooms automatically
-          p.s-description If you want, OOYE can automatically create new Matrix rooms and link them when a new Discord channel is spoken in.
+          p.s-description If you want, OOYE can automatically create new Matrix rooms and link them when an unlinked Discord channel is spoken in.
         - let value = select("guild_active", "autocreate", {guild_id}).pluck().get()
         input(type="hidden" name="guild_id" value=guild_id)
         input.s-toggle-switch.order-last#autocreate(name="autocreate" type="checkbox" hx-post="/api/autocreate" hx-indicator="#autocreate-loading" hx-disabled-elt="this" hx-swap="none" checked=value)