diff --git a/src/ZodSchemaClass.ts b/src/ZodSchemaClass.ts
index ff34b2e..4b38b2b 100644
--- a/src/ZodSchemaClass.ts
+++ b/src/ZodSchemaClass.ts
@@ -29,7 +29,7 @@ extends TraitExpressionBuilder<Superclass, Traits> {
     // }
 
     schema<
-        Superclass        extends AbstractClass<object> & { schema?: never, defaultValues?: never },
+        Superclass        extends AbstractClass<object, []> & { schema?: never, defaultValues?: never },
 
         SchemaT           extends z.ZodRawShape,
         SchemaUnknownKeys extends z.UnknownKeysParam,
@@ -58,11 +58,7 @@ extends TraitExpressionBuilder<Superclass, Traits> {
         return new ZodSchemaClassBuilder(
             Schemas as unknown as (
                 AbstractClass<
-                    InstanceType<Superclass> &
-                    Simplify<
-                        Extend<[Schemas, Values]>
-                    >,
-
+                    InstanceType<Superclass> & Values,
                     ConstructorParameters<typeof Schemas>
                 > &
                 Simplify<
@@ -109,40 +105,14 @@ extends TraitExpressionBuilder<Superclass, Traits> {
 
         props: {
             jsonifySchema: (props: {
-                schema: z.ZodObject<
-                    SchemaT,
-                    SchemaUnknownKeys,
-                    SchemaCatchall,
-                    Values,
-                    Values
-                >
-
-                shape: SchemaT
-            }) => z.ZodObject<
-                JsonifySchemaT,
-                JsonifySchemaUnknownKeys,
-                JsonifySchemaCatchall,
-                JsonifiedValues,
-                Values
-            >
+                schema:  z.ZodObject<SchemaT, SchemaUnknownKeys, SchemaCatchall, Values, Values>
+                shape:   SchemaT
+            }) => z.ZodObject<JsonifySchemaT, JsonifySchemaUnknownKeys, JsonifySchemaCatchall, JsonifiedValues, Values>
 
             dejsonifySchema: (props: {
-                schema: z.ZodObject<
-                    SchemaT,
-                    SchemaUnknownKeys,
-                    SchemaCatchall,
-                    Values,
-                    Values
-                >
-
-                shape: SchemaT
-            }) => z.ZodObject<
-                DejsonifySchemaT,
-                DejsonifySchemaUnknownKeys,
-                DejsonifySchemaCatchall,
-                Values,
-                JsonifiedValues
-            >
+                schema:  z.ZodObject<SchemaT, SchemaUnknownKeys, SchemaCatchall, Values, Values>
+                shape:   SchemaT
+            }) => z.ZodObject<DejsonifySchemaT, DejsonifySchemaUnknownKeys, DejsonifySchemaCatchall, Values, JsonifiedValues>
         },
     ) {
         const jsonifySchema = props.jsonifySchema({
@@ -154,25 +124,21 @@ extends TraitExpressionBuilder<Superclass, Traits> {
             shape:   this.expressionSuperclass.schema.shape,
         })
 
-        class Schemas extends this.expressionSuperclass {
+        class JsonifiableSchemas extends (this.expressionSuperclass as AbstractClass<object>) {
             static readonly jsonifySchema   = jsonifySchema
             static readonly dejsonifySchema = dejsonifySchema
         }
 
         return new ZodSchemaClassBuilder(
-            Schemas as unknown as (
+            JsonifiableSchemas as unknown as (
                 AbstractClass<
-                    InstanceType<Superclass> &
-                    Simplify<
-                        Extend<[Schemas, Values]>
-                    >,
-
-                    ConstructorParameters<typeof Schemas>
+                    InstanceType<Superclass>,
+                    ConstructorParameters<Superclass>
                 > &
                 Simplify<
                     Extend<[
                         StaticMembers<Superclass>,
-                        StaticMembers<typeof Schemas>,
+                        StaticMembers<typeof JsonifiableSchemas>,
                     ]>
                 >
             ),