diff --git a/block/nbd-client.h b/block/nbd-client.h
index f8d6006..8cdfc92 100644
--- a/block/nbd-client.h
+++ b/block/nbd-client.h
@@ -25,7 +25,7 @@
 
     CoMutex send_mutex;
     CoQueue free_sema;
-    Coroutine *send_coroutine;
+    Coroutine *read_reply_co;
     int in_flight;
 
     Coroutine *recv_coroutine[MAX_NBD_REQUESTS];