diff --git a/src/builders/ZodSchemaClassExtender.ts b/src/builders/ZodSchemaClassExtender.ts
index 1922c2d..e0a5e3a 100644
--- a/src/builders/ZodSchemaClassExtender.ts
+++ b/src/builders/ZodSchemaClassExtender.ts
@@ -1,4 +1,4 @@
-import { AbstractClass } from "type-fest"
+import { AbstractClass, Simplify } from "type-fest"
 import { z } from "zod"
 import { ZodSchemaAbstractClass } from "../shapes/ZodSchemaClass"
 import { Extend, Override, StaticMembers } from "../util"
@@ -47,13 +47,18 @@ export class ZodSchemaClassExtender<Superclass extends AbstractClass<object>> {
 
         return new this.constructor(
             Schemas as unknown as AbstractClass<
-                Extend<[SuperInstance, Values]>,
+                Simplify<
+                    Extend<[SuperInstance, Values]>
+                >,
+
                 [values: Values]
             > &
-            Override<[
-                StaticMembers<Super>,
-                StaticMembers<typeof Schemas>,
-            ]>
+            Simplify<
+                Override<[
+                    StaticMembers<Super>,
+                    StaticMembers<typeof Schemas>,
+                ]>
+            >
         )
     }