diff --git a/protocols/nefarious.py b/protocols/nefarious.py
index 85b39e1..0768f64 100644
--- a/protocols/nefarious.py
+++ b/protocols/nefarious.py
@@ -36,8 +36,6 @@ class P10SIDGenerator():
     def __init__(self, irc):
         self.irc = irc
 
-        self.protocol_caps |= {'slash-in-hosts', 'underscore-in-hosts'}
-
         try:
             query = irc.serverdata["sidrange"]
         except (KeyError, ValueError):
@@ -77,6 +75,8 @@ class P10Protocol(IRCS2SProtocol):
 
         self.hook_map = {'END_OF_BURST': 'ENDBURST', 'OPMODE': 'MODE', 'CLEARMODE': 'MODE', 'BURST': 'JOIN'}
 
+        self.protocol_caps |= {'slash-in-hosts', 'underscore-in-hosts'}
+
     def _send(self, source, text):
         self.irc.send("%s %s" % (source, text))