hook_query_views_alter does not seam to be working at all

Hello, I'm trying to alter a query that the view is doing to have the arguments passed doing a LIKE instead of an =
I'm using the _query_views_alter but it does ot look like it has been called at all.
Here is the code:

function mymodule_contact_query_views_alter(QueryAlterableInterface $query) {
  watchdog('cccc', print_r($query, TRUE));	 
}