diff --git a/mmwatch/www/mmwatch.py b/mmwatch/www/mmwatch.py
index b51a9e3..4c64306 100644
--- a/mmwatch/www/mmwatch.py
+++ b/mmwatch/www/mmwatch.py
@@ -167,4 +167,5 @@ def the_one_and_only_page():
     return render_template('index.html', stats=stats,
                            changes=q['changes'], users=q['users'], tags=q['tags'],
                            versions=q['versions'], dates=q['dates'], countries=q['countries'],
+                           has_revert=config.OAUTH_KEY != '',
                            params=params, purl=purl)
diff --git a/mmwatch/www/revert.py b/mmwatch/www/revert.py
index d24f0bb..cd88c74 100644
--- a/mmwatch/www/revert.py
+++ b/mmwatch/www/revert.py
@@ -14,8 +14,8 @@ openstreetmap = oauth.remote_app('OpenStreetMap',
                                  request_token_url='https://www.openstreetmap.org/oauth/request_token',
                                  access_token_url='https://www.openstreetmap.org/oauth/access_token',
                                  authorize_url='https://www.openstreetmap.org/oauth/authorize',
-                                 consumer_key=app.config['OAUTH_KEY'],
-                                 consumer_secret=app.config['OAUTH_SECRET']
+                                 consumer_key=app.config['OAUTH_KEY'] or '123',
+                                 consumer_secret=app.config['OAUTH_SECRET'] or '123'
                                  )
 
 
diff --git a/mmwatch/www/templates/index.html b/mmwatch/www/templates/index.html
index d0ac392..1b6048b 100644
--- a/mmwatch/www/templates/index.html
+++ b/mmwatch/www/templates/index.html
@@ -139,7 +139,9 @@
     With selected changes:
     <button onclick="btnClear()">Clear</button>
     <button onclick="btnLevel0()">Open in Level0</button>
+    {% if has_revert %}
     <button onclick="btnRevert('{{ url_for('revert') }}')">Revert</button>
+    {% endif %}
   </div>
 </div>
 <iframe height="0" width="0" name="josmframe" style="visibility:hidden; display:none;" src="about:blank"></iframe>