diff --git a/domain-server/resources/web/css/style.css b/domain-server/resources/web/css/style.css
index cef30b5782..081022bbe2 100644
--- a/domain-server/resources/web/css/style.css
+++ b/domain-server/resources/web/css/style.css
@@ -66,6 +66,10 @@ span.port {
   margin-top: 10px;
 }
 
+.save-button:disabled {
+  opacity: .45;
+}
+
 #small-save-button {
   width: 100%;
   margin-bottom: 15px;
diff --git a/domain-server/resources/web/settings/index.shtml b/domain-server/resources/web/settings/index.shtml
index 54fbb02eca..a26bc10343 100644
--- a/domain-server/resources/web/settings/index.shtml
+++ b/domain-server/resources/web/settings/index.shtml
@@ -22,7 +22,7 @@
       </ul>
       
       <button id="advanced-toggle-button" class="btn btn-info">Show advanced</button>
-      <button class="btn btn-success save-button">Save and restart</button>
+      <button class="btn btn-success save-button" disabled>Save and restart</button>
     </div>
   </div>
   
@@ -54,7 +54,7 @@
   </div>
   
   <div class="col-xs-12 hidden-sm hidden-md hidden-lg">
-    <button class="btn btn-success save-button" id="small-save-button">Save and restart</button>
+    <button class="btn btn-success save-button" id="small-save-button" disabled>Save and restart</button>
   </div>
 </div>