diff --git a/receiver/mongodbreceiver/config_test.go b/receiver/mongodbreceiver/config_test.go
index 6a1d0f3d5..4ed3d34f3 100644
--- a/receiver/mongodbreceiver/config_test.go
+++ b/receiver/mongodbreceiver/config_test.go
@@ -211,7 +211,7 @@ func TestLoadConfig(t *testing.T) {
 
 	sub, err := cm.Sub(component.NewIDWithName(metadata.Type, "").String())
 	require.NoError(t, err)
-	require.NoError(t, component.UnmarshalConfig(sub, cfg))
+	require.NoError(t, sub.Unmarshal(cfg))
 
 	expected := factory.CreateDefaultConfig().(*Config)
 	expected.Hosts = []confignet.AddrConfig{