diff --git a/pretalx-docker/init.sls b/pretalx-docker/init.sls
index bb167d4..038065c 100644
--- a/pretalx-docker/init.sls
+++ b/pretalx-docker/init.sls
@@ -1,10 +1,14 @@
 pretalx-data-directory-exists:
   file.directory:
+    - user: 999
+    - group: 999
     - name: /opt/pretalx/data
     - makedirs: True
 
 pretalx-public-directory-exists:
   file.directory:
+    - user: 999
+    - group: 999
     - name: /opt/pretalx/public
     - makedirs: True