diff --git a/systemtests/system.go b/systemtests/system.go
index dad1ad6cb067..5b964ee03327 100644
--- a/systemtests/system.go
+++ b/systemtests/system.go
@@ -732,7 +732,7 @@ func (s *SystemUnderTest) AddFullnode(t *testing.T, beforeStart ...func(nodeNumb
 		configFile := filepath.Join(configPath, tomlFile)
 		_ = os.Remove(configFile)
 		_ = MustCopyFile(filepath.Join(WorkDir, s.nodePath(0), "config", tomlFile), configFile)
-		if tomlFile == "app.toml" {
+		if tomlFile == "app.toml" && IsV2() {
 			file := filepath.Join(WorkDir, s.nodePath(nodeNumber), "config", tomlFile)
 			EditToml(file, func(doc *tomledit.Document) {
 				SetValue(doc, fmt.Sprintf("%s:%d", node.IP, DefaultRestPort+nodeNumber), "rest", "address")