diff --git a/modules/networking/isup.py b/modules/networking/isup.py
index f20276c..3b68a7f 100644
--- a/modules/networking/isup.py
+++ b/modules/networking/isup.py
@@ -14,7 +14,7 @@ def isup(url):
         o = urllib.parse.urlparse("http://" + url)
     if o.netloc != "":
         isup = getJSON("http://isitup.org/%s.json" % o.netloc)
-        if "status_code" in isup and isup["status_code"] == 1:
+        if isup is not None and "status_code" in isup and isup["status_code"] == 1:
             return isup["response_time"]
 
     return None
diff --git a/nemubot/hooks/message.py b/nemubot/hooks/message.py
index 65a2c0f..0844358 100644
--- a/nemubot/hooks/message.py
+++ b/nemubot/hooks/message.py
@@ -24,11 +24,10 @@ class Message(Abstract):
 
     """Class storing hook information, specialized for a generic Message"""
 
-    def __init__(self, call, name=None, data=None, regexp=None,
-                 channels=list(), server=None, mtimes=-1, end_call=None):
+    def __init__(self, call, name=None, regexp=None, channels=list(),
+                 server=None, **kargs):
 
-        Abstract.__init__(self, call=call, data=data,
-                          end_call=end_call, mtimes=mtimes)
+        Abstract.__init__(self, call=call, **kargs)
 
         self.name = name
         self.regexp = regexp
diff --git a/nemubot/tools/web.py b/nemubot/tools/web.py
index 4f02289..23ae713 100644
--- a/nemubot/tools/web.py
+++ b/nemubot/tools/web.py
@@ -83,7 +83,7 @@ def getURLContent(url, timeout=15):
     elif o.scheme is None or o.scheme == "":
         conn = http.client.HTTPConnection(o.hostname, port=80, timeout=timeout)
     else:
-        return None
+        raise IRCException("Invalid URL")
 
     import socket
     try:
@@ -94,14 +94,8 @@ def getURLContent(url, timeout=15):
         else:
             conn.request("GET", o.path, None, {"User-agent":
                                                "Nemubot v%s" % __version__})
-    except socket.timeout:
-        return None
-    except OSError: # [Errno 113] No route to host
-        return None
-    except socket.gaierror:
-        print ("<tools.web> Unable to receive page %s on %s from %s."
-               % (o.path, o.netloc, url))
-        return None
+    except OSError as e:
+        raise IRCException(e.strerror)
 
     try:
         res = conn.getresponse()
@@ -109,7 +103,7 @@ def getURLContent(url, timeout=15):
         cntype = res.getheader("Content-Type")
 
         if size > 524288 or (cntype is not None and cntype[:4] != "text" and cntype[:4] != "appl"):
-            return None
+            raise IRCException("Content too large to be retrieved")
 
         data = res.read(size)