diff --git a/ui/docker-entrypoint.sh b/ui/docker-entrypoint.sh
index cc8e480928..d608b80f44 100755
--- a/ui/docker-entrypoint.sh
+++ b/ui/docker-entrypoint.sh
@@ -16,10 +16,13 @@
 set -e
 
 if [ ! -z "$NGINX_SSL" ] && [ "$NGINX_SSL" = "true" ]; then
-
     rm /etc/nginx/conf.d/default.conf
     ln -s /app/nginx-confs/ssl.conf /etc/nginx/conf.d/default.conf
 elif [ ! -z "$SP_HTTP_SERVER_ADAPTER_ENDPOINT" ]; then
+    DEFAULT_CONF_BACKUP="/etc/nginx/conf.d/default.conf_$(date +%s).bak"
+    echo "Create backup of old configuration $DEFAULT_CONF_BACKUP"
+    cp /etc/nginx/conf.d/default.conf $DEFAULT_CONF_BACKUP
+
     rm /etc/nginx/conf.d/default.conf
     envsubst '\$SP_HTTP_SERVER_ADAPTER_ENDPOINT' < /etc/nginx/conf.d/default.conf.template > /etc/nginx/conf.d/default.conf
 fi