diff --git a/v1/fcm.go b/fcm.go
similarity index 100%
rename from v1/fcm.go
rename to fcm.go
diff --git a/v1/fcm_test.go b/fcm_test.go
similarity index 90%
rename from v1/fcm_test.go
rename to fcm_test.go
index b90d4d9..ce75194 100644
--- a/v1/fcm_test.go
+++ b/fcm_test.go
@@ -10,12 +10,6 @@ const (
 	ServiceAccountFilePath = "fixtures/service_account.json"
 )
 
-func assertEqual(t *testing.T, v, e interface{}) {
-	if v != e {
-		t.Fatalf("%#v != %#v", v, e)
-	}
-}
-
 func readFixture(path string) string {
 	data, err := os.ReadFile(path)
 	if err != nil {
diff --git a/v1/fixtures/service_account.json b/fixtures/service_account.json
similarity index 100%
rename from v1/fixtures/service_account.json
rename to fixtures/service_account.json
diff --git a/v1/requests.go b/requests.go
similarity index 100%
rename from v1/requests.go
rename to requests.go