diff --git a/samba.sh b/samba.sh
index 1e5633e..3945d65 100755
--- a/samba.sh
+++ b/samba.sh
@@ -109,7 +109,7 @@ share() { local share="$1" path="$2" browsable="${3:-yes}" ro="${4:-yes}" \
     echo -n ".TemporaryItems/.Trashes/desktop.ini/ehthumbs.db/" >>$file
     echo "Network Trash Folder/Temporary Items/Thumbs.db/" >>$file
     echo "   delete veto files = yes" >>$file
-    [[ ${users:-""} && ! ${users:-""} =~ all ]] &&
+    [[ ${users:-""} && ! ${users:-""} == all ]] &&
         echo "   valid users = $(tr ',' ' ' <<< $users)" >>$file
     [[ ${admins:-""} && ! ${admins:-""} =~ none ]] &&
         echo "   admin users = $(tr ',' ' ' <<< $admins)" >>$file