diff --git a/rpc/rpclient.go b/rpc/rpclient.go
index 86ece61..5733872 100644
--- a/rpc/rpclient.go
+++ b/rpc/rpclient.go
@@ -115,7 +115,8 @@ func (this *RPClient) CallWithTimeout(serviceMethod string, args interface{}, re
 	}()
 
 	if this.client == nil {
-		return ErrRPClientNoConn
+		err = ErrRPClientNoConn
+		return err
 	}
 
 	if d <= time.Second {
@@ -125,7 +126,8 @@ func (this *RPClient) CallWithTimeout(serviceMethod string, args interface{}, re
 	call := this.client.Go(serviceMethod, args, reply, make(chan *rpc.Call, 1))
 	select {
 	case <-time.After(d):
-		return ErrRPClientCallTimeout
+		err = ErrRPClientCallTimeout
+		return err
 	case call = <-call.Done:
 		err = call.Error
 	}
@@ -142,25 +144,30 @@ func (this *RPClient) CallWithTimeout(serviceMethod string, args interface{}, re
 
 		dd := d - time.Now().Sub(start)
 		if dd <= 0 {
-			return ErrRPClientCallTimeout
+			err = ErrRPClientCallTimeout
+			return err
 		}
 
 		select {
 		case <-time.After(dd):
-			return ErrRPClientCallTimeout
+			err = ErrRPClientCallTimeout
+			return err
 		case <-dailed:
 			dd = d - time.Now().Sub(start)
 			if dd <= 0 {
-				return ErrRPClientCallTimeout
+				err = ErrRPClientCallTimeout
+				return err
 			}
 			call = this.client.Go(serviceMethod, args, reply, make(chan *rpc.Call, 1))
 			dd = d - time.Now().Sub(start)
 			if dd <= 0 {
-				return ErrRPClientCallTimeout
+				err = ErrRPClientCallTimeout
+				return err
 			}
 			select {
 			case <-time.After(dd):
-				return ErrRPClientCallTimeout
+				err = ErrRPClientCallTimeout
+				return err
 			case call = <-call.Done:
 				err = call.Error
 			}