diff --git a/start.sh b/start.sh
index f269987..a60e456 100755
--- a/start.sh
+++ b/start.sh
@@ -6,7 +6,7 @@ mkdir -p /app/data/runtime /app/data/config
 
 if [[ ! -f /app/data/config/prometheus.yml ]]; then
     echo "=> Creating config file on first run"
-    cp /app/code/prometheus.yml /app/data/config/prometheus.yml
+    sudo -u cloudron cp -n /app/code/prometheus.yml /app/data/config/prometheus.yml
 fi
 
 chown -R cloudron:cloudron /app/data