diff --git a/filemgr/config_manager.go b/filemgr/config_manager.go
index 68dbc04..431e27d 100644
--- a/filemgr/config_manager.go
+++ b/filemgr/config_manager.go
@@ -91,6 +91,10 @@ func (fsr *FsRepo) checkConfig(op *OverrideParams) error {
 			cnf.APIRegisterHub.SupportAccounts = op.SupportAccounts
 		}
 	}
+	if cnf.SignFilter == nil {
+		cnf.SignFilter = &config.SignFilter{}
+	}
+
 	if reset {
 		err = config.CoverConfig(fsr.configPath(), cnf)
 		if err != nil {
diff --git a/filemgr/fs_test.go b/filemgr/fs_test.go
index 9081007..613209d 100644
--- a/filemgr/fs_test.go
+++ b/filemgr/fs_test.go
@@ -39,4 +39,8 @@ func TestNewFS(t *testing.T) {
 		t.Fatal()
 	}
 	assert.Equal(t, curAPI, targetAPI)
+
+	require.NotNil(t, fs.Config().Factor)
+	require.NotNil(t, fs.Config().SignFilter)
+	require.NotNil(t, fs.Config().APIRegisterHub)
 }