diff --git a/config/quality/eslint-suppressions.json b/config/quality/eslint-suppressions.json
index 6950c395cf..d966760de8 100644
--- a/config/quality/eslint-suppressions.json
+++ b/config/quality/eslint-suppressions.json
@@ -1056,11 +1056,6 @@
       "count": 1
     }
   },
-  "src/app/(dashboard)/dashboard/webhooks/__tests__/webhook-wizard.test.tsx": {
-    "@typescript-eslint/no-unused-vars": {
-      "count": 1
-    }
-  },
   "src/app/api/assess/route.ts": {
     "@typescript-eslint/no-unused-vars": {
       "count": 1
diff --git a/config/quality/vitest-exclusions.json b/config/quality/vitest-exclusions.json
index db157663f1..0e2c033398 100644
--- a/config/quality/vitest-exclusions.json
+++ b/config/quality/vitest-exclusions.json
@@ -8,12 +8,6 @@
       "measured": "2026-09-10",
       "status": "Tests 1 failed | 5 passed (6)"
     },
-    {
-      "file": "src/app/(dashboard)/dashboard/webhooks/__tests__/webhook-wizard.test.tsx",
-      "issue": "#13204",
-      "measured": "2026-09-10",
-      "status": "Tests 1 failed | 6 passed (7)"
-    },
     {
       "file": "tests/unit/ui/logs-page-detail-modal-reopen-on-close.test.tsx",
       "issue": "#13204",
diff --git a/src/app/(dashboard)/dashboard/webhooks/__tests__/webhook-wizard.test.tsx b/src/app/(dashboard)/dashboard/webhooks/__tests__/webhook-wizard.test.tsx
index 09ff7c9ea0..5fd7e81bb9 100644
--- a/src/app/(dashboard)/dashboard/webhooks/__tests__/webhook-wizard.test.tsx
+++ b/src/app/(dashboard)/dashboard/webhooks/__tests__/webhook-wizard.test.tsx
@@ -67,13 +67,18 @@ function t(key: string): string {
 function getButton(text: string): HTMLButtonElement | null {
   return (
     (Array.from(document.querySelectorAll("button")).find((b) => b.textContent?.includes(text)) as
-      | HTMLButtonElement
-      | undefined) ?? null
+      HTMLButtonElement | undefined) ?? null
   );
 }
 
 const roots: Array<{ unmount: () => void }> = [];
 
+beforeEach(() => {
+  (
+    globalThis as typeof globalThis & { IS_REACT_ACT_ENVIRONMENT?: boolean }
+  ).IS_REACT_ACT_ENVIRONMENT = true;
+});
+
 afterEach(() => {
   roots.forEach((r) => {
     act(() => r.unmount());
@@ -233,6 +238,11 @@ describe("AddWebhookWizard — step 2→3 creates webhook with correct kind", ()
 
     renderIntoBody(<AddWebhookWizard isOpen={true} onClose={vi.fn()} onCreated={vi.fn()} t={t} />);
 
+    // Let the wizard's open/reset effect settle before interacting with step 1.
+    await act(async () => {
+      await Promise.resolve();
+    });
+
     // Step 1: default is "slack", click Next
     const nextBtn1 = getButton("Next");
     expect(nextBtn1).toBeTruthy();
diff --git a/vitest.config.ts b/vitest.config.ts
index c125f3ea39..ca9c893a24 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -39,7 +39,6 @@ export default defineConfig({
       "tests/e2e/protocol-clients.test.ts",
       // ── Pre-existing failures tracked by #8618 ───────────────────────────────
       "tests/unit/ui/request-logger-autorefresh-visibility-3972.test.tsx", // #13204 — falha real; remover esta exclusão quando consertado
-      "src/app/(dashboard)/dashboard/webhooks/__tests__/webhook-wizard.test.tsx", // #13204 — falha real; remover esta exclusão quando consertado
       "tests/unit/ui/logs-page-detail-modal-reopen-on-close.test.tsx", // #13204 — falha real; remover esta exclusão quando consertado
       "tests/unit/ui/agent-card.test.tsx", // #13204 — falha real; remover esta exclusão quando consertado
       "src/app/(dashboard)/dashboard/endpoint/__tests__/ApiEndpointsTab.test.tsx", // #13204 — falha real; remover esta exclusão quando consertado