diff --git a/frontend/mgramseva/lib/screeens/generate_bill/widgets/meter_reading.dart b/frontend/mgramseva/lib/screeens/generate_bill/widgets/meter_reading.dart
index 236845377..7e55d4f3b 100644
--- a/frontend/mgramseva/lib/screeens/generate_bill/widgets/meter_reading.dart
+++ b/frontend/mgramseva/lib/screeens/generate_bill/widgets/meter_reading.dart
@@ -106,7 +106,7 @@ class MeterReadingDigitTextFieldBox extends StatelessWidget {
           keyboardType: TextInputType.number,
           maxLength: 1,
           inputFormatters: [
-            FilteringTextInputFormatter.allow(RegExp(r'^[0-9]+$'))
+            FilteringTextInputFormatter.allow(RegExp(r'^[0-9]+'))
           ],
           decoration: InputDecoration(
             // contentPadding: EdgeInsets.all(0),