diff --git a/matrixpack.sh b/matrixpack.sh
index 31229154730f3844e894640bef98a08c4c54d588..6be03acb4a94b3410ab093c0d6e6320e8a619784 100755
--- a/matrixpack.sh
+++ b/matrixpack.sh
@@ -26,7 +26,7 @@ fi
 
 for i in "$@"
 do
-  if [ -d $i ]; then
+  if [ -d "$i" ]; then
 
     # Changing directory to work directly in it
     cd "$i"