diff --git a/internal/stats/http_request_stat_manager_test.go b/internal/stats/http_request_stat_manager_test.go
index 7fd3cf6..589d363 100644
--- a/internal/stats/http_request_stat_manager_test.go
+++ b/internal/stats/http_request_stat_manager_test.go
@@ -37,11 +37,11 @@ func TestHTTPRequestStatManager_Loop_Region(t *testing.T) {
 
 func TestHTTPRequestStatManager_Loop_UserAgent(t *testing.T) {
 	var manager = NewHTTPRequestStatManager()
-	manager.AddUserAgent(1, "Mozilla/5.0 (Macintosh; Intel Mac OS X 11_1_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36")
-	manager.AddUserAgent(1, "Mozilla/5.0 (Macintosh; Intel Mac OS X 11_1_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36")
-	manager.AddUserAgent(1, "Mozilla/5.0 (Macintosh; Intel Mac OS X 11) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76 Safari/537.36")
-	manager.AddUserAgent(1, "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36")
-	manager.AddUserAgent(1, "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko")
+	manager.AddUserAgent(1, "Mozilla/5.0 (Macintosh; Intel Mac OS X 11_1_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36", "")
+	manager.AddUserAgent(1, "Mozilla/5.0 (Macintosh; Intel Mac OS X 11_1_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36", "")
+	manager.AddUserAgent(1, "Mozilla/5.0 (Macintosh; Intel Mac OS X 11) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76 Safari/537.36", "")
+	manager.AddUserAgent(1, "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36", "")
+	manager.AddUserAgent(1, "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko", "")
 	err := manager.Loop()
 	if err != nil {
 		t.Fatal(err)