diff --git a/plinth/modules/owncloud/__init__.py b/plinth/modules/owncloud/__init__.py
index 4a29d7bfb..e2225072c 100644
--- a/plinth/modules/owncloud/__init__.py
+++ b/plinth/modules/owncloud/__init__.py
@@ -22,6 +22,18 @@ Plinth module to configure ownCloud
 from . import owncloud
 from .owncloud import init
 
+from plinth import action_utils
+
 __all__ = ['owncloud', 'init']
 
 depends = ['plinth.modules.apps']
+
+
+def diagnose():
+    """Run diagnostics and return the results."""
+    results = []
+
+    results.extend(action_utils.diagnose_url_on_all(
+        'https://{host}/roundcube', extra_options=['--no-check-certificate']))
+
+    return results
diff --git a/plinth/modules/owncloud/templates/owncloud.html b/plinth/modules/owncloud/templates/owncloud.html
index 2a6836f2d..035474ce5 100644
--- a/plinth/modules/owncloud/templates/owncloud.html
+++ b/plinth/modules/owncloud/templates/owncloud.html
@@ -37,6 +37,10 @@
   Visit this URL to set up the initial administration account for
   ownCloud.</p>
 
+  {% include "diagnostics_button.html" with module="owncloud" %}
+
+  <h3>Configuration</h3>
+
   <form class="form" method="post">
     {% csrf_token %}