diff --git a/scripts/build_docker.sh b/scripts/build_docker.sh
index a6df2a453..ec5f28d9f 100644
--- a/scripts/build_docker.sh
+++ b/scripts/build_docker.sh
@@ -2,9 +2,9 @@
 
 WEBGOAT_HOME=$(pwd)/../
 
-cd ${WEBGOAT_HOME}/webgoat-server
+cd "${WEBGOAT_HOME}"/webgoat-server
 docker build -t webgoat/webgoat-v8.0.0.snapshot .
 
-cd ${WEBGOAT_HOME}/webwolf
+cd "${WEBGOAT_HOME}"/webwolf
 docker build -t webgoat/webwolf-v8.0.0.snapshot .