2 files changed, 2 insertions, 1 deletions
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCall.cs b/src/csharp/Grpc.Core/Internal/AsyncCall.cs
index b50580c40f..ab194121a7 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCall.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCall.cs
@@ -251,6 +251,7 @@ namespace Grpc.Core.Internal
         {
             lock (myLock)
             {
+                GrpcPreconditions.CheckState(started);
                 CheckSendingAllowed(allowFinished: true);
 
                 if (!disposed && !finished)
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs b/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
index 180b89db4d..df313cbb73 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
@@ -135,6 +135,7 @@ namespace Grpc.Core.Internal
 
             lock (myLock)
             {
+                GrpcPreconditions.CheckState(started);
                 CheckSendingAllowed(allowFinished: false);
 
                 call.StartSendMessage(HandleSendFinished, payload, writeFlags, !initialMetadataSent);
@@ -213,7 +214,6 @@ namespace Grpc.Core.Internal
 
         protected virtual void CheckSendingAllowed(bool allowFinished)
         {
-            GrpcPreconditions.CheckState(started);
             CheckNotCancelled();
             GrpcPreconditions.CheckState(!disposed || allowFinished);