Fix broken test
diff --git a/test/core/end2end/tests/resource_quota_server.c b/test/core/end2end/tests/resource_quota_server.c
index 4d3ce1c..d6d640b 100644
--- a/test/core/end2end/tests/resource_quota_server.c
+++ b/test/core/end2end/tests/resource_quota_server.c
@@ -203,7 +203,7 @@
     op = ops;
     op->op = GRPC_OP_SEND_INITIAL_METADATA;
     op->data.send_initial_metadata.count = 0;
-    op->flags = 0;
+    op->flags = GRPC_INITIAL_METADATA_WAIT_FOR_READY;
     op->reserved = NULL;
     op++;
     op->op = GRPC_OP_SEND_MESSAGE;