diff --git a/start.sh b/start.sh
index 380954b..44cc67a 100644
--- a/start.sh
+++ b/start.sh
@@ -118,10 +118,10 @@ register_admin_user() {
         echo "Admin user created successfully!"
         
         # renmove registration_shared_secret from homeserver.yaml for security
-        yq eval '.registration_shared_secret = ""' /data/homeserver.yaml > /data/homeserver.yaml.tmp && mv /data/homeserver.yaml.tmp /data/homeserver.yaml
+        yq eval '.registration_shared_secret = ""' /data/homeserver.yaml > /tmp/homeserver.yaml.tmp && mv /tmp/homeserver.yaml.tmp /data/homeserver.yaml
         
         # trigger a restart of synapse to reload config
-        echo '{"NAME":"service-matrix.containers.matrixserver-app"}' | jq -r > /var/tmp/input/upgrade.json
+        echo '{"NAME":"service-matrix.containers.matrixserver-app"}' | jq -r > /var/tmp/shared/input/upgrade.json
         echo "Matrix server app restart requested"
 
         return 0