diff --git a/src/FSharp.Core/observable.fsi b/src/FSharp.Core/observable.fsi
index bc371965090..b415b7c3086 100644
--- a/src/FSharp.Core/observable.fsi
+++ b/src/FSharp.Core/observable.fsi
@@ -135,7 +135,6 @@ module Observable =
     /// let observableNumbers = Observable.ToObservable numbers
     ///
     /// let isEvenNumber = fun number -> number % 2 = 0
-    /// let initialState = 2
     ///
     /// let leftPartition, rightPartition =
     ///     Observable.partition isEvenNumber observableNumbers