diff --git a/.travis.yml b/.travis.yml
index 22fead59..9287e780 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,7 @@ script:
   - RACK_ENV=production bundle exec rake war
   - nohup java -jar activeadmin-demo.war >/dev/null 2>&1 &
   - sleep 30
-  - [[ `curl -o /dev/null --silent --head --write-out '%{http_code}\n' http://localhost:8080` == 200 ]] && echo "HTTP OK" || echo "HTTP failed" && exit -1
+  - [[ "$(curl -o /dev/null --silent --head --write-out '%{http_code}\n' http://localhost:8080)" == "200" ]] && echo "HTTP OK" || echo "HTTP failed" && exit -1
 before_deploy:
   - export RELEASE_WAR_FILE=$(ls activeadmin-demo.war)
   - echo "deploying $RELEASE_WAR_FILE to GitHub releases"