diff --git a/doc/configuration.txt b/doc/configuration.txt
index 1a7114e..52e6cf4 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -578,6 +578,7 @@
    - nopoll
    - nosplice
    - nogetaddrinfo
+   - noreuseport
    - spread-checks
    - server-state-base
    - server-state-file
@@ -1130,6 +1131,10 @@
   Disables the use of getaddrinfo(3) for name resolving. It is equivalent to
   the command line argument "-dG". Deprecated gethostbyname(3) will be used.
 
+noreuseport
+  Disables the use of SO_REUSEPORT - see socket(7). It is equivalent to the
+  command line argument "-dR".
+
 spread-checks <0..50, in percent>
   Sometimes it is desirable to avoid sending agent and health checks to
   servers at exact intervals, for instance when many logical servers are