1 files changed, 5 insertions, 4 deletions

diff --git a/src/push-btrfs b/src/push-btrfs
index a534053..41ffd7f 100755
--- a/src/push-btrfs
+++ b/src/push-btrfs
@@ -55,10 +55,11 @@ check_user_is_root
 if [ $# = 1 ]
 then
         case "$1" in
-                '' ) die 'config file name is blank' ;;
-                */*) die 'config file name must not contain "/"' ;;
-                *.json) ;;
-                *) die "config file name must end in '.json'" ;;
+                ''     ) die 'config file name is blank' ;;
+                */*    ) die 'config file name must not contain "/"' ;;
+                .*     ) die 'config file name must not begin "."' ;;
+                *.json ) ;;
+                *      ) die 'config file name must end ".json"' ;;
         esac
         config_file=$CONFIG_DIR/$1
         config_file_temp=$CONFIG_DIR/.$1~tmp