diff --git a/ext/websocket/01_websocket.js b/ext/websocket/01_websocket.js
index 6359791741..3f4e16b909 100644
--- a/ext/websocket/01_websocket.js
+++ b/ext/websocket/01_websocket.js
@@ -19,6 +19,7 @@ import {
   MessageEvent,
 } from "ext:deno_web/02_event.js";
 import { Blob, BlobPrototype } from "ext:deno_web/09_file.js";
+import { getLocationHref } from "ext:deno_web/12_location.js";
 const primordials = globalThis.__bootstrap.primordials;
 const {
   ArrayBufferPrototype,
@@ -143,11 +144,17 @@ class WebSocket extends EventTarget {
     let wsURL;
 
     try {
-      wsURL = new URL(url);
+      wsURL = new URL(url, getLocationHref());
     } catch (e) {
       throw new DOMException(e.message, "SyntaxError");
     }
 
+    if (wsURL.protocol === "http:") {
+      wsURL.protocol = "ws:";
+    } else if (wsURL.protocol === "https:") {
+      wsURL.protocol = "wss:";
+    }
+
     if (wsURL.protocol !== "ws:" && wsURL.protocol !== "wss:") {
       throw new DOMException(
         "Only ws & wss schemes are allowed in a WebSocket URL.",
diff --git a/tools/wpt/expectation.json b/tools/wpt/expectation.json
index 5aab514cd5..520ac1a309 100644
--- a/tools/wpt/expectation.json
+++ b/tools/wpt/expectation.json
@@ -7229,7 +7229,10 @@
     "remove-own-iframe-during-onerror.window.html": false,
     "remove-own-iframe-during-onerror.window.html?wpt_flags=h2": false,
     "remove-own-iframe-during-onerror.window.html?wss": false,
-    "Create-on-worker-shutdown.any.worker.html": false
+    "Create-on-worker-shutdown.any.worker.html": false,
+    "Create-http-urls.any.html": true,
+    "Create-invalid-urls.any.html": true,
+    "Create-non-absolute-url.any.html": true
   },
   "workers": {
     "Worker-base64.any.worker.html": true,