diff --git a/frontend/src/routes/persons/[id]/edit/+page.server.ts b/frontend/src/routes/persons/[id]/edit/+page.server.ts
index e814737a..dd9fd1af 100644
--- a/frontend/src/routes/persons/[id]/edit/+page.server.ts
+++ b/frontend/src/routes/persons/[id]/edit/+page.server.ts
@@ -22,7 +22,9 @@ export async function load({ params, fetch, locals }) {
 		throw error(result.response.status, getErrorMessage(code));
 	}
 
-	return { person: result.data!, aliases: aliasesResult.data ?? [] };
+	const person = result.data!;
+	const personType = person.personType === 'SKIP' ? 'UNKNOWN' : person.personType;
+	return { person: { ...person, personType }, aliases: aliasesResult.data ?? [] };
 }
 
 export const actions = {
diff --git a/frontend/src/routes/persons/[id]/edit/page.server.test.ts b/frontend/src/routes/persons/[id]/edit/page.server.test.ts
new file mode 100644
index 00000000..a5e76b1a
--- /dev/null
+++ b/frontend/src/routes/persons/[id]/edit/page.server.test.ts
@@ -0,0 +1,33 @@
+import { describe, it, expect } from 'vitest';
+
+type PersonType = 'PERSON' | 'INSTITUTION' | 'GROUP' | 'UNKNOWN' | 'SKIP';
+
+function normalizePersonType(raw: string | undefined | null): PersonType {
+	return raw === 'SKIP' ? 'UNKNOWN' : ((raw ?? 'PERSON') as PersonType);
+}
+
+describe('edit load — SKIP → UNKNOWN normalization', () => {
+	it('maps SKIP to UNKNOWN', () => {
+		expect(normalizePersonType('SKIP')).toBe('UNKNOWN');
+	});
+
+	it('passes PERSON through unchanged', () => {
+		expect(normalizePersonType('PERSON')).toBe('PERSON');
+	});
+
+	it('passes INSTITUTION through unchanged', () => {
+		expect(normalizePersonType('INSTITUTION')).toBe('INSTITUTION');
+	});
+
+	it('passes GROUP through unchanged', () => {
+		expect(normalizePersonType('GROUP')).toBe('GROUP');
+	});
+
+	it('passes UNKNOWN through unchanged', () => {
+		expect(normalizePersonType('UNKNOWN')).toBe('UNKNOWN');
+	});
+
+	it('defaults null to PERSON', () => {
+		expect(normalizePersonType(null)).toBe('PERSON');
+	});
+});