diff --git a/packages/effect-fc/src/Lens.ts b/packages/effect-fc/src/Lens.ts
index b0a1dcd..4f5dde2 100644
--- a/packages/effect-fc/src/Lens.ts
+++ b/packages/effect-fc/src/Lens.ts
@@ -75,8 +75,8 @@ export const map = <A, ER, RR, EW, RW, B>(
     self: Lens<A, ER, RR, EW, RW>,
     get: (a: A) => B,
     set: {
-        (parent: A, b: B): A
         (b: B): (parent: A) => A
+        (parent: A, b: B): A
     },
 ): Lens<B, ER, RR, EW, RW> => {
     const setF = (parent: A, b: B) => set.length >= 2
@@ -88,7 +88,7 @@ export const map = <A, ER, RR, EW, RW, B>(
         changes: Stream.map(self.changes, get),
         modify: <C, E1 = never, R1 = never>(
             f: (b: B) => Effect.Effect<readonly [C, B], E1, R1>
-        ) => self.modify((a: A) =>
+        ) => self.modify(a =>
             Effect.flatMap(f(get(a)), ([c, next]) => Effect.succeed([c, setF(a, next)] as const))
         ),
     })