diff --git a/bot/isup.py b/bot/isup.py
index d317b65..02cb9d8 100644
--- a/bot/isup.py
+++ b/bot/isup.py
@@ -12,19 +12,22 @@ from . import Plugin
 class Useless(Plugin):
     @command
     def isup(self, mask: IrcString, target: IrcString, args: Dict):
-        """Checks if a address is up or down
+        """Checks if an address is up or down
 
         %%isup <address>
         """
         address = args['<address>']
-        if not address.startswith('http://'):
+        if not address.startswith('http://') and not address.startswith('https://'):
             address = 'https://{}'.format(address)
 
         try:
-            requests.head(address)
+            res = requests.head(address)
+            res.raise_for_status()
             state = 'up'
         except requests.ConnectionError:
-            state = 'down'
+            state = 'down (timeout)'
+        except requests.HTTPError as e:
+            state = f'down ({e.response.status_code} {e.response.reason})'
 
         parsed = urlparse(address)
         return '\x02{}://{}\x02 seems to be \x02{}\x02'.format(parsed.scheme, parsed.netloc, state)