diff --git a/guix/scripts/repl.scm b/guix/scripts/repl.scm
index 39a9b09656..fc3e4e2131 100644
--- a/guix/scripts/repl.scm
+++ b/guix/scripts/repl.scm
@@ -65,6 +65,9 @@
 Start a Guile REPL in the Guix execution environment.\n"))
   (display (G_ "
   -t, --type=TYPE        start a REPL of the given TYPE"))
+  (display (G_ "
+      --listen=ENDPOINT  listen ENDPOINT instead of standard I/O"))
+  (newline)
   (display (G_ "
   -L, --load-path=DIR    prepend DIR to the package module search path"))
   (newline)