diff --git a/substitute_environment_variables.sh b/substitute_environment_variables.sh
index b885471..4222835 100755
--- a/substitute_environment_variables.sh
+++ b/substitute_environment_variables.sh
@@ -26,9 +26,9 @@ done
 echo ${VITE_BACKEND_DOMAIN_PLACEHOLDER}
 
 # Save old variables
-echo -e "VITE_BACKEND_DOMAIN_PLACEHOLDER=${VITE_BACKEND_DOMAIN_PLACEHOLDER}" > .env.old
-echo -e "VITE_INSTANCE_DOMAIN_PLACEHOLDER=${VITE_INSTANCE_DOMAIN_PLACEHOLDER}" >> .env.old
-echo -e "VITE_HTTPS_PLACEHOLDER=${VITE_HTTPS_PLACEHOLDER}" >> .env.old
+echo -e "VITE_BACKEND_DOMAIN_PLACEHOLDER=${VITE_BACKEND_DOMAIN}" > .env.old
+echo -e "VITE_INSTANCE_DOMAIN_PLACEHOLDER=${VITE_INSTANCE_DOMAIN}" >> .env.old
+echo -e "VITE_HTTPS_PLACEHOLDER=${VITE_HTTPS}" >> .env.old
 
 # Starting NGINX
 nginx -g 'daemon off;'
\ No newline at end of file