diff --git a/gui/qt/main_window.py b/gui/qt/main_window.py
index bb83cb52..77df155a 100644
--- a/gui/qt/main_window.py
+++ b/gui/qt/main_window.py
@@ -2599,7 +2599,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
         self.fee_unit = self.config.get('fee_unit', 0)
         fee_unit_label = HelpLabel(_('Fee Unit') + ':', '')
         fee_unit_combo = QComboBox()
-        fee_unit_combo.addItems([_('sat/byte'), _('mZCL/kB')])
+        fee_unit_combo.addItems([_('zat/byte'), _('mZCL/kB')])
         fee_unit_combo.setCurrentIndex(self.fee_unit)
         def on_fee_unit(x):
             self.fee_unit = x