diff --git a/frontend/mgramseva/lib/screeens/add_expense/expense_details.dart b/frontend/mgramseva/lib/screeens/add_expense/expense_details.dart
index 2bc19d97e..c06c0ebfe 100644
--- a/frontend/mgramseva/lib/screeens/add_expense/expense_details.dart
+++ b/frontend/mgramseva/lib/screeens/add_expense/expense_details.dart
@@ -274,7 +274,7 @@ class _ExpenseDetailsState extends State<ExpenseDetails> {
                               textInputType: TextInputType.number,
                               inputFormatter: [
                                 FilteringTextInputFormatter.allow(
-                                    RegExp("[0-9]"))
+                                    RegExp(r"^[1-9]\d{5}$"))
                               ],
                               labelSuffix: '(₹)',
                               isDisabled: (expenseDetails.allowEdit ?? true)