Named routes not working in Laravel 5.2?

I have some named routes using the as parameter. Seems to work fine in 5.1, but when I use the same package in 5.2 it throws an error:

ErrorException in UrlGenerator.php line 307:
Route [/blog] not defined. (View: ...)

I've cleared all the caches to no avail.

php artisan cache:clear
php artisan view:clear
php artisan route:clear
php artisan config:clear

Have dumped:

composer dump-autoload

But still doesn't work. When I do a php artisan route:list it seems ok to me:

+--------+----------+------------------+------------+----------------------------------------------------------------+------------+
| Domain | Method   | URI              | Name       | Action                                                         | Middleware |
+--------+----------+------------------+------------+----------------------------------------------------------------+------------+
|        | GET|HEAD | blog             | blog       | ...                                                            |            |
|        | GET|HEAD | blog/feed        | feed       | ...                                                            |            |

via Chebli Mohamed