diff --git a/go/pserver/client.go b/go/pserver/client.go
index a8d2d710d82fa7b6ac2694fc1e5784180aab5e36..6938b9d5ce6f6d73c05bd6e3154777023965c319 100644
--- a/go/pserver/client.go
+++ b/go/pserver/client.go
@@ -1,6 +1,7 @@
 package pserver
 
 import (
+	"errors"
 	"hash/fnv"
 	"sort"
 	"time"
@@ -124,8 +125,7 @@ func (c *Client) FinishInitParams() error {
 // parameters.
 func (c *Client) SendGrads(grads []Gradient) error {
 	if len(grads) == 0 {
-		log.Info("Send Empty Gradient")
-		return nil
+		return errors.New("no gradient received")
 	}
 	errCh := make(chan error, len(grads))
 	for _, g := range grads {