diff --git a/doc/modes.txt b/doc/modes.txt
index 9f8bc467..2f3004fa 100644
--- a/doc/modes.txt
+++ b/doc/modes.txt
@@ -23,6 +23,7 @@ User Modes:
 +y - spy        - See LINKS, STATS (if configured), TRACE notices
 +z - operwall   - See oper generated WALLOPS
 +D - deaf       - Ignore all PRIVMSG's sent to channels
++S - Service    - Makes IRC Services unkickable
 +Z - operspy    - See operspy notices
 
 Channel Modes:
diff --git a/help/opers/umode b/help/opers/umode
index 9b6a76bb..2f926d6b 100644
--- a/help/opers/umode
+++ b/help/opers/umode
@@ -26,3 +26,4 @@ Usermodes: (* designates that the umode is oper only)
        * +z     - Can see oper wallops.
        * +Z     - Can see operspy notices
          +D     - Deaf - ignores all channel messages.
+       * +S     - Service - Makes IRC Services unkickable