--- a/plugin.py	Thu Nov 22 17:47:07 2018 +0800
+++ b/plugin.py	Thu Nov 22 17:47:30 2018 +0800
@@ -188,7 +188,7 @@
     differential = wrap(differential, ['phabrev'])
 
     def snarfDifferential(self, irc, msg, match):
-        r'\bD(?P<phabrev>\d+)\b'
+        r'(^|[^/])\bD(?P<phabrev>\d+)\b'
         channel = msg.args[0]
         if not irc.isChannel(channel):
             return