diff --git a/modules/effects/arrow-effects-data/src/main/kotlin/arrow/effects/typeclasses/Effect.kt b/modules/effects/arrow-effects-data/src/main/kotlin/arrow/effects/typeclasses/Effect.kt
index 1b411749fb7..fcb6b4afaf4 100644
--- a/modules/effects/arrow-effects-data/src/main/kotlin/arrow/effects/typeclasses/Effect.kt
+++ b/modules/effects/arrow-effects-data/src/main/kotlin/arrow/effects/typeclasses/Effect.kt
@@ -2,18 +2,10 @@ package arrow.effects.typeclasses
 
 import arrow.Kind
 import arrow.core.Either
-import arrow.effects.IO
 
 /**
  * ank_macro_hierarchy(arrow.effects.typeclasses.Effect)
  */
 interface Effect<F> : Async<F> {
   fun <A> Kind<F, A>.runAsync(cb: (Either<Throwable, A>) -> Kind<F, Unit>): Kind<F, Unit>
-
-  fun <A> Kind<F, A>.toIO(): IO<A> = IO.async { _, cb ->
-    runAsync { r ->
-      cb(r).just()
-    }
-  }
-
 }