redundant 'of'
diff --git a/common/kotlinx-coroutines-core-common/src/Supervisor.kt b/common/kotlinx-coroutines-core-common/src/Supervisor.kt
index c222f66..f150737 100644
--- a/common/kotlinx-coroutines-core-common/src/Supervisor.kt
+++ b/common/kotlinx-coroutines-core-common/src/Supervisor.kt
@@ -23,7 +23,7 @@
*
* If [parent] job is specified, then this supervisor job becomes a child job of its parent and is cancelled when its
* parent fails or is cancelled. All this supervisor's children are cancelled in this case, too. The invocation of
- * of [cancel][Job.cancel] with exception (other than [CancellationException]) on this supervisor job also cancels parent.
+ * [cancel][Job.cancel] with exception (other than [CancellationException]) on this supervisor job also cancels parent.
*
* @param parent an optional parent job.
*/