diff --git a/src/view/grid/GridAccount.cpp b/src/view/grid/GridAccount.cpp
index f65c1ce..34c65b6 100644
--- a/src/view/grid/GridAccount.cpp
+++ b/src/view/grid/GridAccount.cpp
@@ -733,6 +733,7 @@ void GridAccount::OnOperationModified(wxGridEvent& event)
          !GetCellValue(row, ACCOUNT).Length() ||
 	 !_canAddOperation))
     {
+	new_op.fix_cost = (row <= _fixCosts);
         if (_kiss->SearchPreviousOperation(&op_tmp, new_op, new_op.month, new_op.year, _canAddOperation))
 	{
             new_op.category = op_tmp.category;