diff --git a/paseri-lib/src/schemas/safe-parse.ts b/paseri-lib/src/schemas/safe-parse.test.ts
similarity index 95%
rename from paseri-lib/src/schemas/safe-parse.ts
rename to paseri-lib/src/schemas/safe-parse.test.ts
index bf3eaec..b115907 100644
--- a/paseri-lib/src/schemas/safe-parse.ts
+++ b/paseri-lib/src/schemas/safe-parse.test.ts
@@ -19,7 +19,7 @@ test('Failure', () => {
     const schema = p.string();
     const result = schema.safeParse(123);
     if (!result.ok) {
-        expect(result.issue).toEqual({ type: 'leaf', code: 'invalid_type' });
+        expect(result.issue).toEqual({ type: 'leaf', code: 'invalid_type', expected: 'string' });
     } else {
         expect(result.ok).toBeFalsy();
     }