diff --git a/packages/net/src/Connection.ts b/packages/net/src/Connection.ts
index 814c986..bbab68c 100644
--- a/packages/net/src/Connection.ts
+++ b/packages/net/src/Connection.ts
@@ -1,4 +1,5 @@
 import {Emitter} from '@welshman/lib'
+import {normalizeRelayUrl} from '@welshman/util'
 import {Socket} from './Socket'
 import type {Message} from './Socket'
 import {ConnectionEvent} from './ConnectionEvent'
@@ -27,6 +28,10 @@ export class Connection extends Emitter {
   constructor(url: string) {
     super()
 
+    if (url !== normalizeRelayUrl(url)) {
+      console.warn(`Attempted to open connection to non-normalized url ${url}`)
+    }
+
     this.url = url
     this.socket = new Socket(this)
     this.sender = new ConnectionSender(this)
diff --git a/packages/net/src/Socket.ts b/packages/net/src/Socket.ts
index d99cdb8..e35ad50 100644
--- a/packages/net/src/Socket.ts
+++ b/packages/net/src/Socket.ts
@@ -69,7 +69,7 @@ export class Socket {
     // Allow the socket to start closing before waiting
     await sleep(100)
 
-    // Wait for the socket to fully clos
+    // Wait for the socket to fully close
     await this.wait()
 
     this.ws = undefined
diff --git a/packages/net/src/Subscribe.ts b/packages/net/src/Subscribe.ts
index 9dc1b08..43f046b 100644
--- a/packages/net/src/Subscribe.ts
+++ b/packages/net/src/Subscribe.ts
@@ -1,5 +1,5 @@
 import {ctx, Emitter, max, chunk, randomId, once, groupBy, uniq} from '@welshman/lib'
-import {matchFilters, unionFilters, TrustedEvent} from '@welshman/util'
+import {LOCAL_RELAY_URL, matchFilters, normalizeRelayUrl, unionFilters, TrustedEvent} from '@welshman/util'
 import type {Filter} from '@welshman/util'
 import {Tracker} from "./Tracker"
 import {Connection} from './Connection'
@@ -354,6 +354,12 @@ export type SubscribeRequestWithHandlers = SubscribeRequest & {
 export const subscribe = ({onEvent, onEose, onClose, onComplete, ...request}: SubscribeRequestWithHandlers) => {
   const sub: Subscription = makeSubscription({delay: 50, ...request})
 
+  for (const relay of request.relays) {
+    if (relay !== LOCAL_RELAY_URL && relay !== normalizeRelayUrl(relay)) {
+      console.warn(`Attempted to open subscription to non-normalized url ${relay}`)
+    }
+  }
+
   if (request.delay === 0) {
     executeSubscription(sub)
   } else {
diff --git a/packages/util/src/Relay.ts b/packages/util/src/Relay.ts
index fc37bae..3e89110 100644
--- a/packages/util/src/Relay.ts
+++ b/packages/util/src/Relay.ts
@@ -6,9 +6,9 @@ import type {HashedEvent, TrustedEvent} from './Events'
 
 // Constants and types
 
-export const LOCAL_RELAY_URL = "local://welshman.relay"
+export const LOCAL_RELAY_URL = "local://welshman.relay/"
 
-export const BOGUS_RELAY_URL = "bogus://welshman.relay"
+export const BOGUS_RELAY_URL = "bogus://welshman.relay/"
 
 export type RelayProfile = {
   url: string