diff --git a/src/cpp/client/client_unary_call.cc b/src/cpp/client/client_unary_call.cc
index 51bcfdada6ca9b135e2bdd07cc5a4a27042a32ae..284af33b4352a04cd115b86c7fcbc6fecae6d692 100644
--- a/src/cpp/client/client_unary_call.cc
+++ b/src/cpp/client/client_unary_call.cc
@@ -57,7 +57,7 @@ Status BlockingUnaryCall(ChannelInterface *channel, const RpcMethod &method,
   buf.AddClientSendClose();
   buf.AddClientRecvStatus(&context->trailing_metadata_, &status);
   call.PerformOps(&buf);
-  GPR_ASSERT(cq.Pluck(&buf) && (buf.got_message || !status.IsOk()));
+  GPR_ASSERT((cq.Pluck(&buf) && buf.got_message) || !status.IsOk());
   return status;
 }