diff --git a/ext/crypto/00_crypto.js b/ext/crypto/00_crypto.js
index 50ee9a7dbb..a503d316ac 100644
--- a/ext/crypto/00_crypto.js
+++ b/ext/crypto/00_crypto.js
@@ -27,7 +27,6 @@
     StringFromCharCode,
     Symbol,
     SymbolFor,
-    SymbolToStringTag,
     WeakMap,
     WeakMapPrototypeGet,
     WeakMapPrototypeSet,
@@ -270,10 +269,6 @@
       return this[_algorithm];
     }
 
-    get [SymbolToStringTag]() {
-      return "CryptoKey";
-    }
-
     [SymbolFor("Deno.customInspect")](inspect) {
       return `${this.constructor.name} ${
         inspect({
@@ -1570,10 +1565,6 @@
 
       return result;
     }
-
-    get [SymbolToStringTag]() {
-      return "SubtleCrypto";
-    }
   }
 
   async function generateKey(normalizedAlgorithm, extractable, usages) {
@@ -2027,6 +2018,7 @@
     }
   }
 
+  webidl.configurePrototype(SubtleCrypto);
   const subtle = webidl.createBranded(SubtleCrypto);
 
   class Crypto {
@@ -2079,10 +2071,6 @@
       return subtle;
     }
 
-    get [SymbolToStringTag]() {
-      return "Crypto";
-    }
-
     [SymbolFor("Deno.customInspect")](inspect) {
       return `${this.constructor.name} ${inspect({})}`;
     }
diff --git a/ext/fetch/20_headers.js b/ext/fetch/20_headers.js
index 7503029d85..a99a297b3f 100644
--- a/ext/fetch/20_headers.js
+++ b/ext/fetch/20_headers.js
@@ -36,7 +36,6 @@
     Symbol,
     SymbolFor,
     SymbolIterator,
-    SymbolToStringTag,
     StringPrototypeReplaceAll,
     StringPrototypeIncludes,
     TypeError,
@@ -411,10 +410,6 @@
       }
       return `Headers ${inspect(headers)}`;
     }
-
-    get [SymbolToStringTag]() {
-      return "Headers";
-    }
   }
 
   webidl.mixinPairIterable("Headers", Headers, _iterableHeaders, 0, 1);
diff --git a/ext/fetch/21_formdata.js b/ext/fetch/21_formdata.js
index 25ed32c2d0..d8e6d2da2a 100644
--- a/ext/fetch/21_formdata.js
+++ b/ext/fetch/21_formdata.js
@@ -26,7 +26,6 @@
     MapPrototypeSet,
     MathRandom,
     Symbol,
-    SymbolToStringTag,
     StringFromCharCode,
     StringPrototypeTrim,
     StringPrototypeSlice,
@@ -72,10 +71,6 @@
    */
 
   class FormData {
-    get [SymbolToStringTag]() {
-      return "FormData";
-    }
-
     /** @type {FormDataEntry[]} */
     [entryList] = [];
 
diff --git a/ext/fetch/23_request.js b/ext/fetch/23_request.js
index 51ea9b3bcc..06843d60c7 100644
--- a/ext/fetch/23_request.js
+++ b/ext/fetch/23_request.js
@@ -39,7 +39,6 @@
     RegExpPrototypeTest,
     Symbol,
     SymbolFor,
-    SymbolToStringTag,
     TypeError,
   } = window.__bootstrap.primordials;
 
@@ -397,10 +396,6 @@
       );
     }
 
-    get [SymbolToStringTag]() {
-      return "Request";
-    }
-
     [SymbolFor("Deno.customInspect")](inspect) {
       return inspect(consoleInternal.createFilteredInspectProxy({
         object: this,
diff --git a/ext/fetch/23_response.js b/ext/fetch/23_response.js
index 0db20e90e2..32ce88d424 100644
--- a/ext/fetch/23_response.js
+++ b/ext/fetch/23_response.js
@@ -37,7 +37,6 @@
     RegExpPrototypeTest,
     Symbol,
     SymbolFor,
-    SymbolToStringTag,
     TypeError,
   } = window.__bootstrap.primordials;
 
@@ -373,10 +372,6 @@
       return second;
     }
 
-    get [SymbolToStringTag]() {
-      return "Response";
-    }
-
     [SymbolFor("Deno.customInspect")](inspect) {
       return inspect(consoleInternal.createFilteredInspectProxy({
         object: this,
diff --git a/ext/timers/02_performance.js b/ext/timers/02_performance.js
index f752ba933e..e09a6f9c07 100644
--- a/ext/timers/02_performance.js
+++ b/ext/timers/02_performance.js
@@ -11,7 +11,6 @@
     ObjectKeys,
     Symbol,
     SymbolFor,
-    SymbolToStringTag,
     TypeError,
   } = window.__bootstrap.primordials;
 
@@ -192,8 +191,6 @@
 
   const _detail = Symbol("[[detail]]");
   class PerformanceMark extends PerformanceEntry {
-    [SymbolToStringTag] = "PerformanceMark";
-
     [_detail] = null;
 
     get detail() {
@@ -261,8 +258,6 @@
   webidl.configurePrototype(PerformanceMark);
 
   class PerformanceMeasure extends PerformanceEntry {
-    [SymbolToStringTag] = "PerformanceMeasure";
-
     [_detail] = null;
 
     get detail() {
@@ -552,10 +547,6 @@
         keys: [],
       }));
     }
-
-    get [SymbolToStringTag]() {
-      return "Performance";
-    }
   }
   webidl.configurePrototype(Performance);
 
diff --git a/ext/url/00_url.js b/ext/url/00_url.js
index e63d70bf8b..b1b3818a32 100644
--- a/ext/url/00_url.js
+++ b/ext/url/00_url.js
@@ -22,7 +22,6 @@
     Symbol,
     SymbolFor,
     SymbolIterator,
-    SymbolToStringTag,
     TypeError,
   } = window.__bootstrap.primordials;
 
@@ -291,10 +290,6 @@
       webidl.assertBranded(this, URLSearchParams);
       return core.opSync("op_url_stringify_search_params", this[_list]);
     }
-
-    get [SymbolToStringTag]() {
-      return "URLSearchParams";
-    }
   }
 
   webidl.mixinPairIterable("URLSearchParams", URLSearchParams, _list, 0, 1);
@@ -596,10 +591,6 @@
       webidl.assertBranded(this, URL);
       return this[_url].href;
     }
-
-    get [SymbolToStringTag]() {
-      return "URL";
-    }
   }
 
   webidl.configurePrototype(URL);
diff --git a/ext/web/01_dom_exception.js b/ext/web/01_dom_exception.js
index 0d9e82c567..ae478da2bd 100644
--- a/ext/web/01_dom_exception.js
+++ b/ext/web/01_dom_exception.js
@@ -18,7 +18,6 @@
     ObjectEntries,
     ObjectSetPrototypeOf,
     SymbolFor,
-    SymbolToStringTag,
   } = window.__bootstrap.primordials;
   const webidl = window.__bootstrap.webidl;
   const consoleInternal = window.__bootstrap.console;
@@ -120,10 +119,6 @@
       return this.#code;
     }
 
-    get [SymbolToStringTag]() {
-      return "DOMException";
-    }
-
     [SymbolFor("Deno.customInspect")](inspect) {
       if (this instanceof DOMException) {
         return `DOMException: ${this.#message}`;
diff --git a/ext/web/02_event.js b/ext/web/02_event.js
index c61f0955d7..f54e3d8a3e 100644
--- a/ext/web/02_event.js
+++ b/ext/web/02_event.js
@@ -395,6 +395,9 @@
     get timeStamp() {
       return this[_attributes].timeStamp;
     }
+
+    // TODO(lucacasonato): remove when this interface is spec aligned
+    [SymbolToStringTag] = "Event";
   }
 
   function defineEnumerableProps(
@@ -988,15 +991,13 @@
       return dispatch(self, event);
     }
 
-    get [SymbolToStringTag]() {
-      return "EventTarget";
-    }
-
     getParent(_event) {
       return null;
     }
   }
 
+  webidl.configurePrototype(EventTarget);
+
   defineEnumerableProps(EventTarget, [
     "addEventListener",
     "removeEventListener",
@@ -1052,10 +1053,6 @@
       this.#error = error;
     }
 
-    get [SymbolToStringTag]() {
-      return "ErrorEvent";
-    }
-
     [SymbolFor("Deno.privateCustomInspect")](inspect) {
       return inspect(consoleInternal.createFilteredInspectProxy({
         object: this,
@@ -1070,6 +1067,9 @@
         ],
       }));
     }
+
+    // TODO(lucacasonato): remove when this interface is spec aligned
+    [SymbolToStringTag] = "ErrorEvent";
   }
 
   defineEnumerableProps(ErrorEvent, [
@@ -1158,6 +1158,9 @@
         ],
       }));
     }
+
+    // TODO(lucacasonato): remove when this interface is spec aligned
+    [SymbolToStringTag] = "CloseEvent";
   }
 
   class CustomEvent extends Event {
@@ -1176,10 +1179,6 @@
       return this.#detail;
     }
 
-    get [SymbolToStringTag]() {
-      return "CustomEvent";
-    }
-
     [SymbolFor("Deno.privateCustomInspect")](inspect) {
       return inspect(consoleInternal.createFilteredInspectProxy({
         object: this,
@@ -1190,6 +1189,9 @@
         ],
       }));
     }
+
+    // TODO(lucacasonato): remove when this interface is spec aligned
+    [SymbolToStringTag] = "CustomEvent";
   }
 
   ReflectDefineProperty(CustomEvent.prototype, "detail", {
@@ -1219,6 +1221,9 @@
         ],
       }));
     }
+
+    // TODO(lucacasonato): remove when this interface is spec aligned
+    [SymbolToStringTag] = "ProgressEvent";
   }
 
   const _eventHandlers = Symbol("eventHandlers");
diff --git a/ext/web/03_abort_signal.js b/ext/web/03_abort_signal.js
index 511ad216fb..98f14f47a6 100644
--- a/ext/web/03_abort_signal.js
+++ b/ext/web/03_abort_signal.js
@@ -13,7 +13,6 @@
     SetPrototypeAdd,
     SetPrototypeDelete,
     Symbol,
-    SymbolToStringTag,
     TypeError,
   } = window.__bootstrap.primordials;
 
@@ -72,10 +71,6 @@
     get aborted() {
       return Boolean(this[aborted]);
     }
-
-    get [SymbolToStringTag]() {
-      return "AbortSignal";
-    }
   }
   defineEventHandler(AbortSignal.prototype, "abort");
 
@@ -91,10 +86,6 @@
     abort() {
       this.#signal[signalAbort]();
     }
-
-    get [SymbolToStringTag]() {
-      return "AbortController";
-    }
   }
 
   webidl.configurePrototype(AbortController);
diff --git a/ext/web/06_streams.js b/ext/web/06_streams.js
index 4199be6e0e..d062f7fbc5 100644
--- a/ext/web/06_streams.js
+++ b/ext/web/06_streams.js
@@ -31,7 +31,6 @@
     Symbol,
     SymbolAsyncIterator,
     SymbolFor,
-    SymbolToStringTag,
     TypeError,
     Uint8Array,
     WeakMap,
@@ -3031,10 +3030,6 @@
         ],
       }));
     }
-
-    get [SymbolToStringTag]() {
-      return "ByteLengthQueuingStrategy";
-    }
   }
 
   webidl.configurePrototype(ByteLengthQueuingStrategy);
@@ -3087,10 +3082,6 @@
         ],
       }));
     }
-
-    get [SymbolToStringTag]() {
-      return "CountQueuingStrategy";
-    }
   }
 
   webidl.configurePrototype(CountQueuingStrategy);
@@ -3339,10 +3330,6 @@
     [SymbolFor("Deno.privateCustomInspect")](inspect) {
       return `${this.constructor.name} ${inspect({ locked: this.locked })}`;
     }
-
-    get [SymbolToStringTag]() {
-      return "ReadableStream";
-    }
   }
 
   // TODO(lucacasonato): should be moved to webidl crate
@@ -3459,10 +3446,6 @@
     [SymbolFor("Deno.privateCustomInspect")](inspect) {
       return `${this.constructor.name} ${inspect({ closed: this.closed })}`;
     }
-
-    get [SymbolToStringTag]() {
-      return "ReadableStreamDefaultReader";
-    }
   }
 
   webidl.configurePrototype(ReadableStreamDefaultReader);
@@ -3582,10 +3565,6 @@
       }));
     }
 
-    get [SymbolToStringTag]() {
-      return "ReadableByteStreamController";
-    }
-
     /**
      * @param {any} reason
      * @returns {Promise<void>}
@@ -3707,10 +3686,6 @@
       }));
     }
 
-    get [SymbolToStringTag]() {
-      return "ReadableStreamDefaultController";
-    }
-
     /**
      * @param {any} reason
      * @returns {Promise<void>}
@@ -3861,10 +3836,6 @@
         inspect({ readable: this.readable, writable: this.writable })
       }`;
     }
-
-    get [SymbolToStringTag]() {
-      return "TransformStream";
-    }
   }
 
   webidl.configurePrototype(TransformStream);
@@ -3928,10 +3899,6 @@
         keys: ["desiredSize"],
       }));
     }
-
-    get [SymbolToStringTag]() {
-      return "TransformStreamDefaultController";
-    }
   }
 
   webidl.configurePrototype(TransformStreamDefaultController);
@@ -4062,10 +4029,6 @@
     [SymbolFor("Deno.privateCustomInspect")](inspect) {
       return `${this.constructor.name} ${inspect({ locked: this.locked })}`;
     }
-
-    get [SymbolToStringTag]() {
-      return "WritableStream";
-    }
   }
 
   webidl.configurePrototype(WritableStream);
@@ -4211,10 +4174,6 @@
         ],
       }));
     }
-
-    get [SymbolToStringTag]() {
-      return "WritableStreamDefaultWriter";
-    }
   }
 
   webidl.configurePrototype(WritableStreamDefaultWriter);
@@ -4268,10 +4227,6 @@
       }));
     }
 
-    get [SymbolToStringTag]() {
-      return "WritableStreamDefaultController";
-    }
-
     /**
      * @param {any=} reason
      * @returns {Promise<void>}
diff --git a/ext/web/08_text_encoding.js b/ext/web/08_text_encoding.js
index e37fbdcd77..28f2848b86 100644
--- a/ext/web/08_text_encoding.js
+++ b/ext/web/08_text_encoding.js
@@ -20,7 +20,6 @@
     PromiseResolve,
     StringPrototypeCharCodeAt,
     StringPrototypeSlice,
-    SymbolToStringTag,
     TypedArrayPrototypeSubarray,
     TypedArrayPrototypeSlice,
     Uint8Array,
@@ -126,10 +125,6 @@
         }
       }
     }
-
-    get [SymbolToStringTag]() {
-      return "TextDecoder";
-    }
   }
 
   webidl.configurePrototype(TextDecoder);
@@ -182,10 +177,6 @@
       });
       return core.opSync("op_encoding_encode_into", source, destination);
     }
-
-    get [SymbolToStringTag]() {
-      return "TextEncoder";
-    }
   }
 
   webidl.configurePrototype(TextEncoder);
@@ -272,10 +263,6 @@
       webidl.assertBranded(this, TextDecoderStream);
       return this.#transform.writable;
     }
-
-    get [SymbolToStringTag]() {
-      return "TextDecoderStream";
-    }
   }
 
   webidl.configurePrototype(TextDecoderStream);
@@ -345,10 +332,6 @@
       webidl.assertBranded(this, TextEncoderStream);
       return this.#transform.writable;
     }
-
-    get [SymbolToStringTag]() {
-      return "TextEncoderStream";
-    }
   }
 
   webidl.configurePrototype(TextEncoderStream);
diff --git a/ext/web/09_file.js b/ext/web/09_file.js
index 64cdb7b8ae..6681f7a13a 100644
--- a/ext/web/09_file.js
+++ b/ext/web/09_file.js
@@ -30,7 +30,6 @@
     Symbol,
     SymbolFor,
     TypedArrayPrototypeSet,
-    SymbolToStringTag,
     TypeError,
     Uint8Array,
   } = window.__bootstrap.primordials;
@@ -359,10 +358,6 @@
       return bytes.buffer;
     }
 
-    get [SymbolToStringTag]() {
-      return "Blob";
-    }
-
     [SymbolFor("Deno.customInspect")](inspect) {
       return inspect(consoleInternal.createFilteredInspectProxy({
         object: this,
@@ -472,10 +467,6 @@
       webidl.assertBranded(this, File);
       return this[_LastModified];
     }
-
-    get [SymbolToStringTag]() {
-      return "File";
-    }
   }
 
   webidl.configurePrototype(File);
diff --git a/ext/web/10_filereader.js b/ext/web/10_filereader.js
index f93eb5feee..56794d8b81 100644
--- a/ext/web/10_filereader.js
+++ b/ext/web/10_filereader.js
@@ -31,7 +31,6 @@
     queueMicrotask,
     StringFromCodePoint,
     Symbol,
-    SymbolToStringTag,
     TypedArrayPrototypeSet,
     TypeError,
     Uint8Array,
@@ -44,10 +43,6 @@
   const handlerSymbol = Symbol("eventHandlers");
 
   class FileReader extends EventTarget {
-    get [SymbolToStringTag]() {
-      return "FileReader";
-    }
-
     /** @type {"empty" | "loading" | "done"} */
     [state] = "empty";
     /** @type {null | string | ArrayBuffer} */
diff --git a/ext/web/13_message_port.js b/ext/web/13_message_port.js
index 2768c0a926..c02b373d66 100644
--- a/ext/web/13_message_port.js
+++ b/ext/web/13_message_port.js
@@ -22,7 +22,6 @@
     ObjectSetPrototypeOf,
     Symbol,
     SymbolFor,
-    SymbolToStringTag,
     TypeError,
     WeakSet,
     WeakSetPrototypeAdd,
@@ -59,10 +58,6 @@
         inspect({ port1: this.port1, port2: this.port2 })
       }`;
     }
-
-    get [SymbolToStringTag]() {
-      return "MessageChannel";
-    }
   }
 
   webidl.configurePrototype(MessageChannel);
@@ -174,10 +169,6 @@
         this[_id] = null;
       }
     }
-
-    get [SymbolToStringTag]() {
-      return "MessagePort";
-    }
   }
 
   defineEventHandler(MessagePort.prototype, "message", function (self) {
diff --git a/ext/webidl/00_webidl.js b/ext/webidl/00_webidl.js
index b756163543..0b8d5c03df 100644
--- a/ext/webidl/00_webidl.js
+++ b/ext/webidl/00_webidl.js
@@ -1053,6 +1053,12 @@
         });
       }
     }
+    ObjectDefineProperty(prototype.prototype, SymbolToStringTag, {
+      value: prototype.name,
+      enumerable: false,
+      configurable: true,
+      writable: false,
+    });
   }
 
   window.__bootstrap ??= {};
diff --git a/runtime/js/11_workers.js b/runtime/js/11_workers.js
index c9bfc172ab..d7d153098a 100644
--- a/runtime/js/11_workers.js
+++ b/runtime/js/11_workers.js
@@ -10,6 +10,7 @@
     StringPrototypeStartsWith,
     String,
     SymbolIterator,
+    SymbolToStringTag,
   } = window.__bootstrap.primordials;
   const webidl = window.__bootstrap.webidl;
   const { URL } = window.__bootstrap.url;
@@ -351,6 +352,8 @@
         hostTerminateWorker(this.#id);
       }
     }
+
+    [SymbolToStringTag] = "Worker";
   }
 
   defineEventHandler(Worker.prototype, "error");
diff --git a/tools/wpt/expectation.json b/tools/wpt/expectation.json
index 10aa98abe6..551e240e16 100644
--- a/tools/wpt/expectation.json
+++ b/tools/wpt/expectation.json
@@ -12150,16 +12150,7 @@
     },
     "historical.any.html": false,
     "idlharness.https.any.html": [
-      "SubtleCrypto interface: operation encrypt(AlgorithmIdentifier, CryptoKey, BufferSource)",
-      "SubtleCrypto interface: operation decrypt(AlgorithmIdentifier, CryptoKey, BufferSource)",
-      "SubtleCrypto interface: operation sign(AlgorithmIdentifier, CryptoKey, BufferSource)",
-      "SubtleCrypto interface: operation verify(AlgorithmIdentifier, CryptoKey, BufferSource, BufferSource)",
-      "SubtleCrypto interface: operation digest(AlgorithmIdentifier, BufferSource)",
-      "SubtleCrypto interface: operation generateKey(AlgorithmIdentifier, boolean, sequence<KeyUsage>)",
       "SubtleCrypto interface: operation deriveKey(AlgorithmIdentifier, CryptoKey, AlgorithmIdentifier, boolean, sequence<KeyUsage>)",
-      "SubtleCrypto interface: operation deriveBits(AlgorithmIdentifier, CryptoKey, unsigned long)",
-      "SubtleCrypto interface: operation importKey(KeyFormat, (BufferSource or JsonWebKey), AlgorithmIdentifier, boolean, sequence<KeyUsage>)",
-      "SubtleCrypto interface: operation exportKey(KeyFormat, CryptoKey)",
       "SubtleCrypto interface: operation wrapKey(KeyFormat, CryptoKey, CryptoKey, AlgorithmIdentifier)",
       "SubtleCrypto interface: operation unwrapKey(KeyFormat, BufferSource, CryptoKey, AlgorithmIdentifier, AlgorithmIdentifier, boolean, sequence<KeyUsage>)",
       "SubtleCrypto interface: crypto.subtle must inherit property \"deriveKey(AlgorithmIdentifier, CryptoKey, AlgorithmIdentifier, boolean, sequence<KeyUsage>)\" with the proper type",
@@ -13572,9 +13563,7 @@
           "If the implementation has a stack property on normal errors, it also does on DOMExceptions"
         ]
       },
-      "class-string-interface.any.html": [
-        "@@toStringTag exists on the prototype with the appropriate descriptor"
-      ],
+      "class-string-interface.any.html": true,
       "class-string-iterator-prototype-object.any.html": true,
       "global-immutable-prototype.any.html": [
         "Setting to a different prototype"
@@ -14573,4 +14562,4 @@
       "Pattern: [{\"pathname\":\"/foo/bar\"}] Inputs: [\"./foo/bar\",\"https://example.com\"]"
     ]
   }
-}
\ No newline at end of file
+}