diff --git a/lib/input.dart b/lib/input.dart
index 443e748..9aae653 100644
--- a/lib/input.dart
+++ b/lib/input.dart
@@ -35,7 +35,7 @@ class _InputWidgetState extends State<InputWidget> {
   }
 
   var maskFormatter = MaskTextInputFormatter(
-    mask: '12.34.5678',
+    mask: '##.##.####',
     filter: {"#": RegExp(r'[0-9]')},
     type: MaskAutoCompletionType.lazy,
   );