$wgNamespacesWithSubpages[NS_PROPOSAL] = TRUE;
$wgContentNamespaces[] = NS_PROPOSAL;
define('NS_PROPOSAL_TALK', 3001);
-$wgExtraNamespaces[NS_PROPOSAL_TALK] = 'Proposal talk';
+$wgExtraNamespaces[NS_PROPOSAL_TALK] = 'Proposal_talk';
$wgNamespacesWithSubpages[NS_PROPOSAL_TALK] = TRUE;
$wgNamespacesToBeSearchedDefault[NS_LANG_DE] = TRUE;