diff --git a/Standard/src/Canon/Parity.qs b/Standard/src/Canon/Parity.qs
index 59607868..af4c703a 100644
--- a/Standard/src/Canon/Parity.qs
+++ b/Standard/src/Canon/Parity.qs
@@ -73,7 +73,7 @@ namespace Microsoft.Quantum.Canon {
     /// # Remarks
     /// The following are equivalent:
     /// ```qsharp
-    /// ApplyCNOTChainWithTarget(Most(qs), Last(qs));
+    /// ApplyCNOTChainWithTarget(Most(qs), Tail(qs));
     /// ```
     /// and
     /// ```qsharp