diff --git a/certbot-nginx/tests/boulder-integration.sh b/certbot-nginx/tests/boulder-integration.sh
index 2ea4f4dd2..6c7d532c4 100755
--- a/certbot-nginx/tests/boulder-integration.sh
+++ b/certbot-nginx/tests/boulder-integration.sh
@@ -8,7 +8,7 @@ nginx_root="$root/nginx"
 mkdir $nginx_root
 original=$(root="$nginx_root" ./certbot-nginx/tests/boulder-integration.conf.sh)
 nginx_conf="$nginx_root/nginx.conf"
-echo $original > $nginx_conf
+echo "$original" > $nginx_conf
 
 
 killall nginx || true
@@ -27,7 +27,7 @@ echo | openssl s_client -connect localhost:5001 \
 diff -q $root/nginx.pem $root/conf/live/nginx.wtf/cert.pem
 
 certbot_test_nginx rollback --checkpoints 9001
-diff -q <(echo $original) $nginx_conf
+diff -q <(echo "$original") $nginx_conf
 
 # note: not reached if anything above fails, hence "killall" at the
 # top