diff --git a/src/ruby/spec/client_server_spec.rb b/src/ruby/spec/client_server_spec.rb
index 594fda1cd3e..aedeca272d3 100644
--- a/src/ruby/spec/client_server_spec.rb
+++ b/src/ruby/spec/client_server_spec.rb
@@ -198,6 +198,7 @@ shared_examples 'basic GRPC message delivery is OK' do
     # confirm the client can receive the server response and status.
     client_ops = {
       CallOps::SEND_CLOSE_FROM_CLIENT => nil,
+      CallOps::RECV_INITIAL_METADATA => nil,
       CallOps::RECV_MESSAGE => nil,
       CallOps::RECV_STATUS_ON_CLIENT => nil
     }