1 files changed, 4 insertions, 1 deletions
diff --git a/src/csharp/Grpc.Core/Internal/CallError.cs b/src/csharp/Grpc.Core/Internal/CallError.cs
index 541575f5e6..a46f9b3859 100644
--- a/src/csharp/Grpc.Core/Internal/CallError.cs
+++ b/src/csharp/Grpc.Core/Internal/CallError.cs
@@ -72,7 +72,10 @@ namespace Grpc.Core.Internal
         /// </summary>
         public static void CheckOk(this CallError callError)
         {
-            GrpcPreconditions.CheckState(callError == CallError.OK, "Call error: " + callError);
+            if (callError != CallError.OK)
+            {
+                throw new InvalidOperationException("Call error: " + callError);
+            }
         }
     }
 }