diff --git a/z.sh b/z.sh
index 705e428..555b3b6 100644
--- a/z.sh
+++ b/z.sh
@@ -49,7 +49,7 @@ _z() {
 
   # maintain the file
   local tempfile
-  tempfile="$(mktemp $datafile.XXXXXX)" || return
+  tempfile="$(mktemp "$datafile.XXXXXX")" || return
   while read line; do
    [ -d "${line%%\|*}" ] && echo $line
   done < "$datafile" | awk -v path="$*" -v now="$(date +%s)" -F"|" '