diff --git a/jsonrpc.go b/jsonrpc.go
index 8ecbbe2d..af67d24d 100644
--- a/jsonrpc.go
+++ b/jsonrpc.go
@@ -12,6 +12,7 @@ import (
 	"reflect"
 	"regexp"
 	"strconv"
+	"strings"
 	"sync"
 	"time"