diff --git a/Dockerfile b/Dockerfile
index 6edcf8d..17377f4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,7 +23,7 @@ RUN curl -L https://publicsuffix.org/list/public_suffix_list.dat -o /app/code/en
 
 RUN ln -sf /app/data/index.html /app/code/env/lib/python3.12/site-packages/synapse/static/index.html
 
-RUN chown -R cloudron.cloudron /app/code
+RUN chown -R cloudron:cloudron /app/code
 
 ADD index.html homeserver.yaml.template start.sh /app/pkg/
 
diff --git a/start.sh b/start.sh
index ed9d75d..58bf8b9 100755
--- a/start.sh
+++ b/start.sh
@@ -102,7 +102,7 @@ fi
 
 # fix permissions
 echo "==> Fixing permissions"
-chown -R cloudron.cloudron /app/data /run/synapse
+chown -R cloudron:cloudron /app/data /run/synapse
 
 echo "==> Starting synapse"
 exec gosu cloudron:cloudron python3 -m synapse.app.homeserver --config-path /app/data/configs/homeserver.yaml -n