diff --git a/tokio/src/runtime/task/state.rs b/tokio/src/runtime/task/state.rs
index 9f1a8ec5a14..42b239e05bb 100644
--- a/tokio/src/runtime/task/state.rs
+++ b/tokio/src/runtime/task/state.rs
@@ -141,7 +141,6 @@ impl State {
 
     /// Transitions the task from `Running` -> `Idle`.
     ///
-    /// Returns `true` if the transition to `Idle` is successful, `false` otherwise.
     /// The transition to `Idle` fails if the task has been flagged to be
     /// cancelled.
     pub(super) fn transition_to_idle(&self) -> TransitionToIdle {