diff --git a/src/views/app.html b/src/views/app.html
index a4b86d718..f1b01a63c 100644
--- a/src/views/app.html
+++ b/src/views/app.html
@@ -292,7 +292,7 @@
             </button>
             <ul class="dropdown-menu dropdown-menu-right">
               <li ng-class="{ 'disabled': !app.manifest.postInstallMessage }"><a href="" ng-click="postInstallMessage.show(false)">First Time Setup</a></li>
-              <li><a ng-href="{{ app.manifest.documentationUrl }}" target="_blank">Documentation</a></li>
+              <li ng-class="{ 'disabled': !app.manifest.documentationUrl }"><a ng-href="{{ app.manifest.documentationUrl }}" target="_blank">Documentation</a></li>
               <li role="separator" class="divider"></li>
               <li><a ng-href="{{ app.manifest.website }}" target="_blank">Project Website</a></li>
             </ul>