diff --git a/clickhouse.go b/clickhouse.go
index cba8053..0625a0e 100644
--- a/clickhouse.go
+++ b/clickhouse.go
@@ -196,7 +196,7 @@ func (srv *ClickhouseServer) SendQuery(r *ClickhouseRequest) (response string, s
 		if r.isInsert {
 			log.Printf("INFO: sending %+v rows to %+v of %+v\n", r.Count, srv.URL, r.Query)
 		}
-		resp, err := srv.Client.Post(url, "", strings.NewReader(r.Content))
+		resp, err := srv.Client.Post(url, "text/plain", strings.NewReader(r.Content))
 		if err != nil {
 			srv.Bad = true
 			return err.Error(), http.StatusBadGateway, ErrServerIsDown