diff --git a/README.md b/README.md
index 31cbb20..c85fa62 100644
--- a/README.md
+++ b/README.md
@@ -97,6 +97,8 @@ Support for these IRCds exist, but are not tested as frequently and thoroughly.
 * [ircd-ratbox](http://www.ratbox.org/) (3.x) - module `ratbox`
     - Host changing is not supported on ircd-ratbox.
     - On ircd-ratbox, all known IPs of users will be shown in `/whois`, even if the client is a cloaked relay client: if you're paranoid about this, turn off Relay IP forwarding by setting the `relay_no_ips` option in the ratbox network's `server:` block.
+* [IRCu](http://coder-com.undernet.org/) (u2.10.12.16+) - module `p10`
+    - Host changing is not supported.
 * [juno-ircd](https://github.com/cooper/yiria) (11.x / janet) - module `ts6` (see [configuration example](https://github.com/cooper/juno/blob/master/doc/ts6.md#pylink))
 * [snircd](https://development.quakenet.org/) (1.3.x+) - module `p10`
     - Outbound host changing (i.e. for the `changehost` plugin) is not supported on P10 variants other than Nefarious.
diff --git a/example-conf.yml b/example-conf.yml
index 0c71a83..11a213f 100644
--- a/example-conf.yml
+++ b/example-conf.yml
@@ -280,7 +280,7 @@ servers:
         # For other P10 IRCds, this should be set to FALSE.
         use_extended_accounts: true
 
-        # Sets the IRCd type. The following options are supported here: 'nefarious', 'snircd', and
+        # Sets the IRCd type. The following options are supported here: 'nefarious', 'snircd', 'ircu', and
         # 'generic'. This defaults to 'nefarious'.
         # With this key set to 'nefarious', FAKE (external vHost changing) and SETHOST (host changing
         # for PyLink / relay clients) are enabled, along with a set of modes tailored to Nefarious.
@@ -288,8 +288,11 @@ servers:
         # With this key set to 'snircd', SETHOST and a set of modes tailored to snircd are enabled.
         # vHost changing of other users (e.g. via the changehost plugin) is not supported.
 
+        # With this key set to 'ircu', a set of modes tailored to IRCu is enabled.
+        # vHost changing is not supported.
+
         # With this key set to 'generic', neither of these host changing features are enabled
-        # and a baseline RFC1459 mode set is used.
+        # and a baseline RFC1459 mode set is used. This configuration is not officially supported.
         #p10_ircd: nefarious
 
         # Determines whether account-based cloaks should be used (someone.users.yournet.org
diff --git a/protocols/p10.py b/protocols/p10.py
index 40c7229..f4b79e2 100644
--- a/protocols/p10.py
+++ b/protocols/p10.py
@@ -799,14 +799,21 @@ class P10Protocol(IRCS2SProtocol):
             cmodes = {'oplevel_apass': 'A', 'oplevel_upass': 'U', 'delayjoin': 'D', 'regonly': 'r',
                       'had_delayjoin': 'd', 'hidequits': 'u', 'regmoderated': 'M', 'blockcolor': 'c',
                       'noctcp': 'C', 'nonotice': 'N', 'noamsg': 'T',
-                      '*A': 'b', '*B': 'AUk', '*C': 'l', '*D': 'imnpstrDrducCMNT'}
+                      '*A': 'b', '*B': 'AUk', '*C': 'l', '*D': 'imnpstrDducCMNT'}
             # From https://www.quakenet.org/help/general/what-user-modes-are-available-on-quakenet
             # plus my own testing.
             self.irc.umodes.update({'servprotect': 'k', 'sno_debug': 'g', 'cloak': 'x',
                                     'hidechans': 'n', 'deaf': 'd', 'hideidle': 'I', 'regdeaf': 'R',
                                     'override': 'X', 'registered': 'r', 'cloak_sethost': 'h', 'locop': 'O',
-                                    '*A': '', '*B': '', '*C': 'h', '*D': 'imnpstrkgxndIRXrO'})
-
+                                    '*A': '', '*B': '', '*C': 'h', '*D': 'imnpstrkgxndIRXO'})
+        elif p10_ircd == 'ircu':
+            # ircu proper has even fewer modes.
+            cmodes = {'oplevel_apass': 'A', 'oplevel_upass': 'U', 'delayjoin': 'D', 'regonly': 'r',
+                      'had_delayjoin': 'd', 'blockcolor': 'c', 'noctcp': 'C',
+                      '*A': 'b', '*B': 'AUk', '*C': 'l', '*D': 'imnpstrDdRcC'}
+            self.irc.umodes.update({'servprotect': 'k', 'sno_debug': 'g', 'cloak': 'x',
+                                    'deaf': 'd', 'registered': 'r', 'locop': 'O',
+                                    '*A': '', '*B': '', '*C': '', '*D': 'imnpstrkgxdrO'})
 
         if self.irc.serverdata.get('use_halfop'):
             cmodes['halfop'] = 'h'