diff --git a/data/homeserver.yaml b/data/homeserver.yaml
index ab9c2b0..a153df1 100644
--- a/data/homeserver.yaml
+++ b/data/homeserver.yaml
@@ -32,6 +32,7 @@ database:
     host: synapse_db
     cp_min: 5
     cp_max: 10
+    allow_unsafe_locale: true
 
 # Medienspeicher und Uploads
 media_store_path: /data/media_store