diff --git a/kotlin-result/src/commonMain/kotlin/com/github/michaelbull/result/On.kt b/kotlin-result/src/commonMain/kotlin/com/github/michaelbull/result/On.kt
index 34cf671..ba6acb3 100644
--- a/kotlin-result/src/commonMain/kotlin/com/github/michaelbull/result/On.kt
+++ b/kotlin-result/src/commonMain/kotlin/com/github/michaelbull/result/On.kt
@@ -5,6 +5,8 @@ import kotlin.contracts.contract
 
 /**
  * Invokes an [action] if this [Result] is [Ok].
+ *
+ * - Rust: [Result.inspect](https://doc.rust-lang.org/std/result/enum.Result.html#method.inspect)
  */
 public inline infix fun <V, E> Result<V, E>.onSuccess(action: (V) -> Unit): Result<V, E> {
     contract {
@@ -20,6 +22,8 @@ public inline infix fun <V, E> Result<V, E>.onSuccess(action: (V) -> Unit): Resu
 
 /**
  * Invokes an [action] if this [Result] is [Err].
+ *
+ * - Rust [Result.inspect_err](https://doc.rust-lang.org/std/result/enum.Result.html#method.inspect_err)
  */
 public inline infix fun <V, E> Result<V, E>.onFailure(action: (E) -> Unit): Result<V, E> {
     contract {