diff --git a/abstract-pool.ts b/abstract-pool.ts
index 3e07b00..04d6cf9 100644
--- a/abstract-pool.ts
+++ b/abstract-pool.ts
@@ -74,19 +74,32 @@ export class AbstractSimplePool {
   subscribe(relays: string[], filter: Filter, params: SubscribeManyParams): SubCloser {
     params.onauth = params.onauth || params.doauth
 
-    return this.subscribeMap(
-      relays.map(url => ({ url, filter })),
-      params,
-    )
+    const request: { url: string; filter: Filter }[] = []
+    for (let i = 0; i < relays.length; i++) {
+      const url = normalizeURL(relays[i])
+      if (!request.find(r => r.url === url)) {
+        request.push({ url, filter })
+      }
+    }
+
+    return this.subscribeMap(request, params)
   }
 
   subscribeMany(relays: string[], filters: Filter[], params: SubscribeManyParams): SubCloser {
     params.onauth = params.onauth || params.doauth
 
-    return this.subscribeMap(
-      relays.flatMap(url => filters.map(filter => ({ url, filter }))),
-      params,
-    )
+    const request: { url: string; filter: Filter }[] = []
+    const uniqUrls: string[] = []
+    for (let i = 0; i < relays.length; i++) {
+      const url = normalizeURL(relays[i])
+      if (uniqUrls.indexOf(url) === -1) {
+        for (let f = 0; f < filters.length; f++) {
+          request.push({ url, filter: filters[f] })
+        }
+      }
+    }
+
+    return this.subscribeMap(request, params)
   }
 
   subscribeMap(requests: { url: string; filter: Filter }[], params: SubscribeManyParams): SubCloser {
diff --git a/abstract-relay.ts b/abstract-relay.ts
index 1d93833..320e579 100644
--- a/abstract-relay.ts
+++ b/abstract-relay.ts
@@ -156,13 +156,13 @@ export class AbstractRelay {
   }
 
   private async waitForDummyReq() {
-    return new Promise((res, err) => {
+    return new Promise((resolve, _) => {
       // make a dummy request with expected empty eose reply
       // ["REQ", "_", {"ids":["aaaa...aaaa"]}]
       const sub = this.subscribe([{ ids: ['a'.repeat(64)] }], {
         oneose: () => {
           sub.close()
-          res(true)
+          resolve(true)
         },
         eoseTimeout: this.pingTimeout + 1000,
       })
diff --git a/jsr.json b/jsr.json
index 169b07d..eaef35e 100644
--- a/jsr.json
+++ b/jsr.json
@@ -1,6 +1,6 @@
 {
   "name": "@nostr/tools",
-  "version": "2.16.1",
+  "version": "2.16.2",
   "exports": {
     ".": "./index.ts",
     "./core": "./core.ts",
diff --git a/package.json b/package.json
index b9d9cf0..9961251 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "type": "module",
   "name": "nostr-tools",
-  "version": "2.16.1",
+  "version": "2.16.2",
   "description": "Tools for making a Nostr client.",
   "repository": {
     "type": "git",