diff --git a/src/thsf/__init__.py b/src/thsf/__init__.py
index 02b1368..b05909b 100644
--- a/src/thsf/__init__.py
+++ b/src/thsf/__init__.py
@@ -55,7 +55,7 @@ def page_not_found(err):
   return redirect(url_for('index'))
 
 def get_slots():
-  return backend.get(endpoint=f"events/{app.local_config['pretalx']['event']}/schedules/{app.local_config['pretalx']['schedule']}").json()
+  return backend.get(endpoint=f"events/{app.local_config['pretalx']['event']}/schedules/{app.local_config['pretalx']['schedule']}/").json()
 
 def get_speaker_biography(name):
   try: