diff --git a/settings/css/settings.css b/settings/css/settings.css
index 4594a22c6d..5cd9207fd6 100644
--- a/settings/css/settings.css
+++ b/settings/css/settings.css
@@ -200,6 +200,11 @@ span.version { margin-left:1em; margin-right:1em; color:#555; }
 	border-bottom: 1px solid #e8e8e8;
 }
 
+.app-dependencies {
+	margin-top: 10px;
+	color: #c33;
+}
+
 .missing-dependencies {
 	list-style: initial;
 	list-style-type: initial;
diff --git a/settings/templates/apps.php b/settings/templates/apps.php
index 3bb0d45f58..48fe0f5a9c 100644
--- a/settings/templates/apps.php
+++ b/settings/templates/apps.php
@@ -52,12 +52,14 @@
 	</p>
 	{{/if}}
 	{{#unless canInstall}}
-	<div><?php p($l->t('This app cannot be installed because the following dependencies are not fulfilled:')); ?></div>
+	<div class="app-dependencies">
+	<p><?php p($l->t('This app cannot be installed because the following dependencies are not fulfilled:')); ?></p>
 	<ul class="missing-dependencies">
 	{{#each missingDependencies}}
 	<li>{{this}}</li>
 	{{/each}}
 	</ul>
+	</div>
 	{{/unless}}
 
 	{{#if update}}
@@ -70,9 +72,7 @@
 	<br />
 	<input type="hidden" id="group_select" title="<?php p($l->t('All')); ?>" style="width: 200px">
 	{{else}}
-	{{#if canInstall}}
-	<input class="enable" type="submit" data-appid="{{id}}" data-active="false" value="<?php p($l->t("Enable"));?>"/>
-	{{/if}}
+	<input class="enable" type="submit" data-appid="{{id}}" data-active="false" {{#unless canInstall}}disabled="disabled"{{/unless}} value="<?php p($l->t("Enable"));?>"/>
 	{{/if}}
 	{{#if canUnInstall}}
 	<input class="uninstall" type="submit" value="<?php p($l->t('Uninstall App')); ?>" data-appid="{{id}}" />