diff --git a/tests/storage/dav/conftest.py b/tests/storage/dav/conftest.py
index c269c5d..8ab81f3 100644
--- a/tests/storage/dav/conftest.py
+++ b/tests/storage/dav/conftest.py
@@ -9,16 +9,31 @@
 
 import os
 import pytest
+import requests
+import requests.exceptions
+import time
 
 dav_server = os.environ.get('DAV_SERVER', '').strip() or 'radicale_filesystem'
 php_sh = os.path.abspath(os.path.join(
     os.path.dirname(__file__), '../../../owncloud-testserver/php.sh'
 ))
 
+
+def wait():
+    for i in range(10):
+        try:
+            requests.get('http://127.0.0.1:8080/')
+        except requests.exceptions.HTTPException:
+            time.sleep(1)
+        else:
+            return True
+    return False
+
+
 if dav_server == 'owncloud':
     @pytest.fixture(autouse=True)
     def start_owncloud_server(xprocess):
         def preparefunc(cwd):
-            return 'Listening on', ['sh', php_sh]
+            return wait, ['sh', php_sh]
 
         xprocess.ensure('owncloud_server', preparefunc)