diff --git a/.travis.yml b/.travis.yml
index c816565..f2bc0d4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,7 +16,7 @@ env:
     - BUILD=test DAV_SERVER=radicale RADICALE_BACKEND=filesystem REQUIREMENTS=devel
       # Radicale-git with filesystem storage (default)
 
-    #- BUILD=test DAV_SERVER=owncloud REQUIREMENTS=release
+    - BUILD=test DAV_SERVER=owncloud REQUIREMENTS=release
       # Latest ownCloud release
 
     - BUILD=test DAV_SERVER=baikal REQUIREMENTS=release
diff --git a/tests/storage/__init__.py b/tests/storage/__init__.py
index afb18cf..26a570a 100644
--- a/tests/storage/__init__.py
+++ b/tests/storage/__init__.py
@@ -146,6 +146,9 @@ class StorageTests(object):
         assert list(s.list()) == [(href, etag)]
 
     def test_has(self, s, get_item):
+        if getattr(self, 'dav_server', '') == 'owncloud':
+            # https://github.com/owncloud/calendar/issues/935
+            pytest.skip('ownCloud is buggy.')
         assert not s.has('asd')
         href, etag = s.upload(get_item())
         assert s.has(href)
@@ -255,6 +258,10 @@ class StorageTests(object):
             assert urlquote(uid, '/@:') in href
 
     def test_metadata(self, requires_metadata, s):
+        # https://github.com/owncloud/core/issues/18409
+        if getattr(self, 'dav_server', '') == 'owncloud':
+            pytest.skip('ownCloud is fundamentally broken.')
+
         try:
             s.set_meta('color', None)
             assert s.get_meta('color') is None