diff --git a/rpc/client.go b/rpc/client.go
index 05b87ae96c..4bf092c34b 100644
--- a/rpc/client.go
+++ b/rpc/client.go
@@ -364,7 +364,7 @@ func (c *Client) CallContext(ctx context.Context, result interface{}, method str
 	resp := batchresp[0]
 	switch {
 	case resp.Error != nil:
-		return resp.Error
+		return resp.Error.FullError()
 	case len(resp.Result) == 0:
 		return ErrNoResult
 	default:
diff --git a/rpc/json.go b/rpc/json.go
index e932389d17..15d392a872 100644
--- a/rpc/json.go
+++ b/rpc/json.go
@@ -157,6 +157,10 @@ func (err *jsonError) ErrorData() interface{} {
 	return err.Data
 }
 
+func (err *jsonError) FullError() error {
+	return fmt.Errorf("message: %v, code: %v, data: %v", err.Message, err.Code, err.Data)
+}
+
 // Conn is a subset of the methods of net.Conn which are sufficient for ServerCodec.
 type Conn interface {
 	io.ReadWriteCloser