diff --git a/controller/channel-billing.go b/controller/channel-billing.go
index 31c9a133..3621b012 100644
--- a/controller/channel-billing.go
+++ b/controller/channel-billing.go
@@ -96,6 +96,9 @@ func GetResponseBody(method, url string, channel *model.Channel, headers http.He
 	if err != nil {
 		return nil, err
 	}
+	if res.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("status code: %d", res.StatusCode)
+	}
 	body, err := io.ReadAll(res.Body)
 	if err != nil {
 		return nil, err
diff --git a/controller/channel-test.go b/controller/channel-test.go
index 0469019a..84197dfd 100644
--- a/controller/channel-test.go
+++ b/controller/channel-test.go
@@ -55,7 +55,7 @@ func testChannel(channel *model.Channel, request ChatRequest) error {
 		return err
 	}
 
-	if resp.StatusCode != 200 {
+	if resp.StatusCode != http.StatusOK {
 		return errors.New("invalid status code: " + strconv.Itoa(resp.StatusCode))
 	}