Fix wrong module name in update function.

On 3.x with clean install there was no problem of importing. However, on an hwpi DB I can confirm import is not working. This happened due to wrong module name in the update function. After the enabling of the module the import works:
![selection_307](https://cloud.githubusercontent.com/assets/4497748/3451858/f9c9e396-01a3-11e4-9797-a42be3661eea.png)