diff --git a/packages/zod/src/__tests__/contract.test-d.ts b/packages/zod/src/__tests__/contract.test-d.ts
index 5f9ace12..c9d3b854 100644
--- a/packages/zod/src/__tests__/contract.test-d.ts
+++ b/packages/zod/src/__tests__/contract.test-d.ts
@@ -61,14 +61,14 @@ describe('zodContract', () => {
 
   test('branded type', () => {
     const BrandedContainer = zod.object({
-      branded: zod.string().brand<'Branded'>()
-   })
-    const brandedContract = zodContract(BrandedContainer)
+      branded: zod.string().brand<'Branded'>(),
+    });
+    const brandedContract = zodContract(BrandedContainer);
 
     const smth: unknown = { branded: 'branded' };
 
     if (brandedContract.isData(smth)) {
       expectTypeOf(smth).toEqualTypeOf<zod.infer<typeof BrandedContainer>>();
     }
-  })
+  });
 });
diff --git a/packages/zod/src/zod_contract.ts b/packages/zod/src/zod_contract.ts
index c5378a6e..03c5e064 100644
--- a/packages/zod/src/zod_contract.ts
+++ b/packages/zod/src/zod_contract.ts
@@ -1,4 +1,4 @@
-import { type ZodType } from 'zod';
+import { type ZodType, type TypeOf } from 'zod';
 import { type Contract } from '@farfetched/core';
 
 /**
@@ -8,7 +8,7 @@ import { type Contract } from '@farfetched/core';
  * @param {ZodType} data Zod Contract for valid data
  */
 function zodContract<T extends ZodType<any, any, any>>(data: T): Contract<unknown, TypeOf<T>> {
-  function isData(prepared: unknown): prepared is D {
+  function isData(prepared: unknown): prepared is T {
     return data.safeParse(prepared).success;
   }