diff --git a/.changeset/proud-horses-dream.md b/.changeset/proud-horses-dream.md
new file mode 100644
index 00000000000..517da52fd04
--- /dev/null
+++ b/.changeset/proud-horses-dream.md
@@ -0,0 +1,5 @@
+---
+'@whatwg-node/disposablestack': patch
+---
+
+Ponyfill SuppressedError correctly inside DisposableStack ponyfills
diff --git a/packages/disposablestack/src/AsyncDisposableStack.ts b/packages/disposablestack/src/AsyncDisposableStack.ts
index 96f223a5673..128f3b48af4 100644
--- a/packages/disposablestack/src/AsyncDisposableStack.ts
+++ b/packages/disposablestack/src/AsyncDisposableStack.ts
@@ -1,6 +1,9 @@
+import { PonyfillSuppressedError } from './SupressedError.js';
 import { DisposableSymbols } from './symbols.js';
 import { isAsyncDisposable, isSyncDisposable, MaybePromise } from './utils.js';
 
+const SuppressedError = globalThis.SuppressedError || PonyfillSuppressedError;
+
 export class PonyfillAsyncDisposableStack implements AsyncDisposableStack {
   private callbacks: (() => MaybePromise<void>)[] = [];
   get disposed(): boolean {
diff --git a/packages/disposablestack/src/DisposableStack.ts b/packages/disposablestack/src/DisposableStack.ts
index 847b3ee89d7..d77e87e6134 100644
--- a/packages/disposablestack/src/DisposableStack.ts
+++ b/packages/disposablestack/src/DisposableStack.ts
@@ -1,6 +1,9 @@
+import { PonyfillSuppressedError } from './SupressedError.js';
 import { DisposableSymbols } from './symbols.js';
 import { isSyncDisposable } from './utils.js';
 
+const SuppressedError = globalThis.SuppressedError || PonyfillSuppressedError;
+
 export class PonyfillDisposableStack implements DisposableStack {
   private callbacks: (() => void)[] = [];
   get disposed(): boolean {