Fatal error: Call to undefined function _entity_translation_path_enabled()

I have written a small CSV importer for entity_translations.
The creation/updating of the translations works perfect.
I noticed that my pathauto was not updated so I looked in the API and code and found
module_invoke_all('entity_translation_save', $form['#entity_type'], $form['#entity'], $form['#language']);
To trigger this.

But when invoking
module_invoke_all('entity_translation_save', 'node', $entity, $row_langcode);

I get the following error:
Fatal error: Call to undefined function _entity_translation_path_enabled()