diff --git a/src/main/java/com/github/tonivade/vavr/effect/IO.java b/src/main/java/com/github/tonivade/vavr/effect/IO.java
index 40162b1..203e37e 100644
--- a/src/main/java/com/github/tonivade/vavr/effect/IO.java
+++ b/src/main/java/com/github/tonivade/vavr/effect/IO.java
@@ -603,7 +603,7 @@
     }
   }
 
-  record FlatMapped<T, R>(IO<? extends T> current, Function1<? super T, ? extends IO<? extends R>> next)  implements IO<R> {
+  record FlatMapped<T, R>(IO<? extends T> current, Function1<? super T, ? extends IO<? extends R>> next) implements IO<R> {
 
     public FlatMapped {
       Objects.requireNonNull(current);