diff --git a/server/middleware/limit_ip.go b/server/middleware/limit_ip.go
index 315010b223..acc6e98b62 100644
--- a/server/middleware/limit_ip.go
+++ b/server/middleware/limit_ip.go
@@ -27,7 +27,7 @@ type LimitConfig struct {
 func (l LimitConfig) LimitWithTime() gin.HandlerFunc {
 	return func(c *gin.Context) {
 		if err := l.CheckOrMark(l.GenerationKey(c), l.Expire, l.Limit); err != nil {
-			c.JSON(http.StatusOK, gin.H{"code": response.ERROR, "msg": err})
+			c.JSON(http.StatusOK, gin.H{"code": response.ERROR, "msg": err.Error()})
 			c.Abort()
 			return
 		} else {