diff --git a/README.md b/README.md
index a03ab6a..a06f9a1 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,7 @@ vi lutim.conf
 * https: 1 if you want to provide secure images URLs (default is 0) ;
 * stats\_day\_num: when you generate statistics with `script/lutim cron stats`, you will have stats for the last `stats_day_num` days (default is 365) ;
 * keep\_ip\_during: when you delete IP addresses of image's senders with `script/lutim cron cleanbdd`, the IP addresses of images older than `keep_ip_during` days will be deleted (default is 365) ;
+* broadcast\_message: put some string (not HTML) here and this message will be displayed on all LUTIm pages (not in JSON responses)
 
 ##Usage
 ```
@@ -125,6 +126,14 @@ If the files directory go under quota, the `stop-upload` file is deleted. If you
 carton exec script/lutim cron watch
 ```
 
+##Broadcast message
+Set a string in the `broadcast_message` option of `lutim.conf` and reload the server with:
+```shell
+carton exec hypnotoad script/lutim
+```
+
+It may take a few reload before the message is displayed.
+
 ##Shutter integration
 See where Shutter (<http://en.wikipedia.org/wiki/Shutter_%28software%29>) keeps its plugins on your computer.
 On my computer, it's in `/usr/share/shutter/resources/system/upload_plugins/upload`.
diff --git a/lutim.conf.template b/lutim.conf.template
index 772bd3f..495d6ac 100644
--- a/lutim.conf.template
+++ b/lutim.conf.template
@@ -20,4 +20,5 @@
     #keep_ip_during    => 365, # optional, number of days, after that delay, the IP addresses of image creators will be deleted (used with script/lutim cron cleanbdd)
     #max_total_size    => 10*1024*1024*1024, # optional, maximum total size of the files directory (used with script/lutim cron watch)
     #policy_when_full  => 'warn', # optional, policy when files directory is over max_total_size. Valid values are 'warn', 'stop-upload' and 'delete'. See README.
+    #broadcast_message => 'Maintenance', #optional, the broadcast_message is displayed on all pages of LUTIm (but no in json response)
 };
diff --git a/templates/layouts/default.html.ep b/templates/layouts/default.html.ep
index 026546f..ffac184 100644
--- a/templates/layouts/default.html.ep
+++ b/templates/layouts/default.html.ep
@@ -60,6 +60,11 @@
                     </p>
                 </div>
             </div>
+% if (defined($config->{broadcast_message})) {
+            <div class="alert alert-info">
+                <strong><%= $config->{broadcast_message} %></strong>
+            </div>
+% }
 % if (defined(stash('stop_upload'))) {
             <div class="alert alert-danger">
                 <strong><%= stash('stop_upload') %></strong>