Form '#theme' preprocess doesn't invoke I have form where '#theme' =&gt; 'ebanq_transfer_theme'. Template file is rendered but preprocess hook doesn't invoke. Any ideas?

/**
 * Implements hook_theme().
 */
function ebanq_transfer_theme() {
    return array(
        'user_accounts_form' =&gt; array(
            'render element' =&gt; 'form',
            'template' =&gt; 'user-accounts-form',
            'path' =&gt; drupal_get_path('module', 'ebanq_transfer') . '/templates',
        ),
    );
}

/**
 * Accounts form preprocess.
 */
function ebanq_transfer_prepocess_user_accounts_form(&amp;$vars) {
    $form = $vars['form'];
    dpm($form);
}
This function 


  ebanq_transfer_preprocess_user_accounts_form(&amp;$vars)


must be called


  template_preprocess_user_accounts_form(&amp;$vars)


So the Drupal bootstrap / hook system will know that.