diff --git a/storage-test.sh b/storage-test.sh
index e2ec97b..c1f0fb1 100755
--- a/storage-test.sh
+++ b/storage-test.sh
@@ -109,7 +109,7 @@ if [ "$1" = "" ]; then
   drives="$(df | grep ext4)"
   IFS='
   '
-  for d in ${drives}; do
+  for d in "${drives}"; do
 	  ((df++))
 	  echo "${df}) ${d}"
   done