diff --git a/slack/im.py b/slack/im.py
index 66954b4..39bcb43 100644
--- a/slack/im.py
+++ b/slack/im.py
@@ -15,6 +15,9 @@ class IM(threads.Thread):
     def name(self):
         return "Chat With %s" % self.__user.name()
 
+    def url(self, base):
+        return "%s/messages/@%s/" % (base, self.__user.user())
+
     def do_fetch_info(self):
         return info(self.id(), self.__uid)