diff --git a/src/StaticType.ts b/src/StaticType.ts
index f743d3c..a54f0e4 100644
--- a/src/StaticType.ts
+++ b/src/StaticType.ts
@@ -1,8 +1,4 @@
-import type { AbstractConstructor } from "type-fest"
-
-
 /**
- * Represents the static members of a class.
- * @template C - A class.
+ * Obtain the static members type of a constructor function type
  */
-export type StaticType<C extends AbstractConstructor<any>> = Omit<C, "prototype">
+export type StaticType<T extends abstract new (...args: any) => any> = Omit<T, "prototype">
diff --git a/src/effect/schema/class/util.ts b/src/effect/schema/class/util.ts
index 79e6027..8b089cf 100644
--- a/src/effect/schema/class/util.ts
+++ b/src/effect/schema/class/util.ts
@@ -1,7 +1,7 @@
-import type { Struct } from "@effect/schema/Schema"
+import { Schema as S } from "@effect/schema"
 
 
-export type HasFields<Fields extends Struct.Fields> = (
+export type HasFields<Fields extends S.Struct.Fields> = (
     | { readonly fields: Fields }
     | { readonly from: HasFields<Fields> }
 )