diff --git a/packages/effect-fc/src/ReactComponent.ts b/packages/effect-fc/src/ReactComponent.ts
index d3d354f..6663cf8 100644
--- a/packages/effect-fc/src/ReactComponent.ts
+++ b/packages/effect-fc/src/ReactComponent.ts
@@ -2,7 +2,7 @@ import { Context, Effect, ExecutionStrategy, Exit, Function, Pipeable, Ref, Runt
 import * as React from "react"
 
 
-export interface ReactComponent<E, R, P> extends Pipeable.Pipeable {
+export interface ReactComponent<E, R, P extends {}> extends Pipeable.Pipeable {
     (props: P): Effect.Effect<React.ReactNode, E, R>
     readonly displayName?: string
     readonly options: Options
@@ -26,7 +26,10 @@ export interface MakeOptions {
     readonly finalizerExecutionStrategy?: ExecutionStrategy.ExecutionStrategy
 }
 
-export const make = <Eff extends Utils.YieldWrap<Effect.Effect<any, any, any>>, P>(
+export const make = <
+    Eff extends Utils.YieldWrap<Effect.Effect<any, any, any>>,
+    P extends {} = {},
+>(
     body: (props: P) => Generator<Eff, React.ReactNode, never>,
     options?: MakeOptions,
 ): ReactComponent<
@@ -55,7 +58,7 @@ export const make = <Eff extends Utils.YieldWrap<Effect.Effect<any, any, any>>,
 
 
 export const useFC: {
-    <E, R, P extends {} = {}>(
+    <E, R, P extends {}>(
         self: ReactComponent<E, R, P>
     ): Effect.Effect<React.FC<P>, never, Exclude<R, Scope.Scope>>
 } = Effect.fnUntraced(function* <E, R, P extends {}>(
@@ -124,7 +127,7 @@ const closeScope = (
 
 
 export const use: {
-    <E, R, P extends {} = {}>(
+    <E, R, P extends {}>(
         self: ReactComponent<E, R, P>,
         fn: (Component: React.FC<P>) => React.ReactNode,
     ): Effect.Effect<React.ReactNode, never, Exclude<R, Scope.Scope>>
@@ -133,10 +136,10 @@ export const use: {
 })
 
 export const withRuntime: {
-    <E, R, P extends {} = {}>(
+    <E, R, P extends {}>(
         context: React.Context<Runtime.Runtime<R>>,
     ): (self: ReactComponent<E, R | Scope.Scope, P>) => React.FC<P>
-    <E, R, P extends {} = {}>(
+    <E, R, P extends {}>(
         self: ReactComponent<E, R | Scope.Scope, P>,
         context: React.Context<Runtime.Runtime<R>>,
     ): React.FC<P>