diff --git a/xml/System.Threading.Tasks/ValueTask.xml b/xml/System.Threading.Tasks/ValueTask.xml
index e3db2805669..8c37df8393d 100644
--- a/xml/System.Threading.Tasks/ValueTask.xml
+++ b/xml/System.Threading.Tasks/ValueTask.xml
@@ -64,6 +64,10 @@ Using a `ValueTask` instead of a <xref:System.Threading.Tasks.Task> introduces s
 
 > [!NOTE]
 > The use of the `ValueTask` type is supported starting with C# 7.0 and is not supported by any version of Visual Basic.
+
+> [!NOTE]
+> An instance created with the parameterless constructor or by the `default(ValueTask)` syntax (a zero-initialized structure) represents a synchronously, successfully completed operation.
+
  ]]></format>
     </remarks>
   </Docs>
diff --git a/xml/System.Threading.Tasks/ValueTask`1.xml b/xml/System.Threading.Tasks/ValueTask`1.xml
index c01259fcc3c..f9e2f3d58bc 100644
--- a/xml/System.Threading.Tasks/ValueTask`1.xml
+++ b/xml/System.Threading.Tasks/ValueTask`1.xml
@@ -77,6 +77,10 @@ As such, the default choice for any asynchronous method should be to return a <x
 
 > [!NOTE]
 >  The use of the <xref:System.Threading.Tasks.ValueTask%601> type is supported starting with C# 7.0, and is not supported by any version of Visual Basic.
+
+> [!NOTE]
+> An instance created with the parameterless constructor or by the `default(ValueTask<TResult>)` syntax (a zero-initialized structure) represents a synchronously, successfully completed operation with a result of `default(TResult)`.
+
  ]]></format>
     </remarks>
   </Docs>