diff --git a/addons/l10n_eg_edi_eta/models/account_move.py b/addons/l10n_eg_edi_eta/models/account_move.py
index c34c758ff9e..42149fbdf22 100644
--- a/addons/l10n_eg_edi_eta/models/account_move.py
+++ b/addons/l10n_eg_edi_eta/models/account_move.py
@@ -5,6 +5,7 @@ import json
 
 from odoo import api, models, fields, _
 from odoo.exceptions import ValidationError, UserError
+from odoo.tools import float_is_zero
 from odoo.tools.sql import column_exists, create_column
 from datetime import datetime
 
@@ -121,4 +122,8 @@ class AccountMove(models.Model):
         self.ensure_one()
         from_currency = self.currency_id
         to_currency = self.company_id.currency_id
-        return abs(self.invoice_line_ids[0].balance / self.invoice_line_ids[0].amount_currency) if from_currency != to_currency and self.invoice_line_ids else 1.0
+        if from_currency != to_currency and self.invoice_line_ids:
+            amount_currency = self.invoice_line_ids[0].amount_currency
+            if not float_is_zero(amount_currency, precision_rounding=from_currency.rounding):
+                return abs(self.invoice_line_ids[0].balance / amount_currency)
+        return 1.0