diff --git a/NEWS.rst b/NEWS.rst
index bd690859..4edca7fb 100644
--- a/NEWS.rst
+++ b/NEWS.rst
@@ -140,6 +140,9 @@ Modules 4.6.0 (not yet released)
   :mfcmd:`module-forbid` modulefile commands to ignore hiding or forbidding
   definition respectively after and before a specified date time. Accepted
   date time format is ``YYYY-MM-DD[THH:MM]``.
+* Add ``--message`` option to :mfcmd:`module-forbid` modulefile command to
+  supplement the error message obtained when trying to evaluate a forbidden
+  module.
 
 .. _GNU configuration recommendations: https://www.gnu.org/prep/standards/html_node/Configuration.html
 
diff --git a/doc/source/modulefile.rst b/doc/source/modulefile.rst
index e4f26104..4ed28c1b 100644
--- a/doc/source/modulefile.rst
+++ b/doc/source/modulefile.rst
@@ -240,7 +240,7 @@ the *modulefile* is being loaded.
 
  * another *modulefile* alias
 
-.. mfcmd:: module-forbid [--after datetime] [--before datetime] [--not-user {user...}] [--not-group {group...}] modulefile...
+.. mfcmd:: module-forbid [--after datetime] [--before datetime] [--not-user {user...}] [--not-group {group...}] [--message {text message}] modulefile...
 
  Forbid use of *modulefile*. An error is obtained when trying to evaluate a
  forbidden module. This command should be placed in one of the
@@ -260,6 +260,9 @@ the *modulefile* is being loaded.
  specified. When both options are set, forbidding is not applied if a match is
  found for ``--not-user`` or ``--not-group``.
 
+ Error message returned when trying to evaluate a forbidden module can be
+ supplemented with the *text message* set through ``--message`` option.
+
  If a :mfcmd:`module-forbid` command applies to a *modulefile* also targeted
  by a :mfcmd:`module-hide --hard<module-hide>` command, this module is
  unveiled when precisely named to return an access error.