--- a/libpurple/protocols/facebook/util.c Fri Nov 30 03:02:14 2018 +0000 +++ b/libpurple/protocols/facebook/util.c Fri Nov 30 17:27:13 2018 -0600 @@ -348,8 +348,8 @@ gint alias_verdict, name_verdict; gchar *astr, *bstr; - astr = g_utf8_casefold(purple_buddy_get_alias(a), -1); - bstr = g_utf8_casefold(purple_buddy_get_alias(b), -1); + astr = g_utf8_casefold(purple_buddy_get_alias(PURPLE_BUDDY(a)), -1); + bstr = g_utf8_casefold(purple_buddy_get_alias(PURPLE_BUDDY(b)), -1); alias_verdict = g_utf8_collate(astr, bstr); g_free(astr); g_free(bstr);