--- a/timelines.go	Sat Apr 15 00:39:43 2017 +0200
+++ b/timelines.go	Sat Apr 15 10:26:36 2017 +0200
@@ -1,7 +1,6 @@
 package gondole
 
 import (
-	"encoding/json"
 	"fmt"
 	"strings"
 
@@ -14,7 +13,6 @@
 // local instance.
 func (g *Client) GetTimelines(timeline string, local bool) ([]Status, error) {
 	var endPoint string
-	var tl []Status
 
 	switch {
 	case timeline == "home", timeline == "public":
@@ -22,33 +20,21 @@
 	case strings.HasPrefix(timeline, ":"):
 		hashtag := timeline[1:]
 		if hashtag == "" {
-			return tl, fmt.Errorf("timelines API: empty hashtag")
+			return nil, fmt.Errorf("timelines API: empty hashtag")
 		}
 		endPoint = "timelines/tag/" + hashtag
 	default:
-		return tl, fmt.Errorf("GetTimelines: bad timelines argument")
-	}
-
-	req := g.prepareRequest(endPoint)
-
-	if timeline == "public" && local {
-		req.QueryParams["local"] = "true"
+		return nil, fmt.Errorf("GetTimelines: bad timelines argument")
 	}
 
-	r, err := rest.API(req)
-	if err != nil {
-		return tl, fmt.Errorf("timelines API query: %s", err.Error())
+	params := make(apiCallParams)
+	if timeline == "public" && local {
+		params["local"] = "true"
 	}
 
-	err = json.Unmarshal([]byte(r.Body), &tl)
-	if err != nil {
-		var errorRes Error
-		err2 := json.Unmarshal([]byte(r.Body), &errorRes)
-		if err2 == nil {
-			return tl, fmt.Errorf("%s", errorRes.Text)
-		}
-		return tl, fmt.Errorf("timelines API: %s", err.Error())
+	var tl []Status
+	if err := g.apiCall(endPoint, rest.Get, params, &tl); err != nil {
+		return nil, err
 	}
-
 	return tl, nil
 }