diff --git a/frontend/src/routes/SearchFilterBar.svelte.spec.ts b/frontend/src/routes/SearchFilterBar.svelte.spec.ts
index fa389d8c..1de166f2 100644
--- a/frontend/src/routes/SearchFilterBar.svelte.spec.ts
+++ b/frontend/src/routes/SearchFilterBar.svelte.spec.ts
@@ -209,7 +209,7 @@ describe('SearchFilterBar – smart-mode chip lifecycle hooks', () => {
 			smartMode: true,
 			onModeToggle
 		});
-		await page.getByRole('button', { name: /KI/ }).click();
+		await page.getByRole('button', { name: /Smart/ }).click();
 		expect(onModeToggle).toHaveBeenCalledOnce();
 	});
 
diff --git a/frontend/src/routes/documents/+page.svelte b/frontend/src/routes/documents/+page.svelte
index 92556463..ad3744f5 100644
--- a/frontend/src/routes/documents/+page.svelte
+++ b/frontend/src/routes/documents/+page.svelte
@@ -17,7 +17,7 @@ import { bulkSelectionStore } from '$lib/document/bulkSelection.svelte';
 import { getErrorMessage, parseBackendError } from '$lib/shared/errors';
 import { csrfFetch } from '$lib/shared/cookies';
 import * as m from '$lib/paraglide/messages.js';
-import { languageTag } from '$lib/paraglide/runtime';
+import { getLocale } from '$lib/paraglide/runtime';
 import type { components } from '$lib/generated/api';
 
 type NlQueryInterpretation = components['schemas']['NlQueryInterpretation'];
@@ -225,7 +225,7 @@ async function runSmartSearch() {
 		const res = await csrfFetch('/api/search/nl', {
 			method: 'POST',
 			headers: { 'Content-Type': 'application/json' },
-			body: JSON.stringify({ query, lang: languageTag() })
+			body: JSON.stringify({ query, lang: getLocale() })
 		});
 		if (!res.ok) {
 			const backend = await parseBackendError(res);
diff --git a/frontend/src/routes/search/SmartModeToggle.svelte.spec.ts b/frontend/src/routes/search/SmartModeToggle.svelte.spec.ts
index 01347271..1661a50e 100644
--- a/frontend/src/routes/search/SmartModeToggle.svelte.spec.ts
+++ b/frontend/src/routes/search/SmartModeToggle.svelte.spec.ts
@@ -22,7 +22,7 @@ describe('SmartModeToggle', () => {
 	it('shows the smart label when smartMode is true', async () => {
 		render(SmartModeToggle, { smartMode: true });
 		const btn = page.getByRole('button');
-		await expect.element(btn).toHaveTextContent('KI');
+		await expect.element(btn).toHaveTextContent('Smart');
 	});
 
 	it('shows the keyword label when smartMode is false', async () => {